CORNEJO PLAZA, María Isabel y RODRÍGUEZ YUNTA, Eduardo. 2016. “From Kant’s categorical imperative to Fritz Jahr’s bioethical imperative: toward the globalization on ethics”. En Fritz Jahr (1895-1953) From the origin of bioethics to integrative bioethics. Byk, Christian y Martin-Sass, Hans editores. Esika, París. Title: “From Kant’s categorical imperative to Fritz Jahr’s bioethical imperative: toward the globalization on ethics.” Authors: María Isabel Cornejo-Plaza and Eduardo Rodríguez-Yunta 1 Interdisciplinary Center for Studies on Bioethics, University of Chile ABSTRACT There are evident coincidences among the moral principles and maxims of Immanuel Kant’s: “human beings should be treated as ends rather than as means”, “one should never act in a way that one could not also will that this maxim should be a universal law”; and Fritz Jahr’s bioethics imperative: "respect every living being in general as an end in itself 1 Isabel Cornejo Plaza, Lawyer LL.M. Eduardo Rodríguez-Yunta, PhD in Biology. Comments by Prof. Fernando Lolas are appreciated. Interdisciplinary Center for Studies on Bioethics, University of Chile.
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CORNEJO PLAZA, María Isabel y RODRÍGUEZ YUNTA, Eduardo. 2016.
“From Kant’s categorical imperative to Fritz Jahr’s bioethical
imperative: toward the globalization on ethics”. En Fritz Jahr
(1895-1953) From the origin of bioethics to integrative bioethics.
Byk, Christian y Martin-Sass, Hans editores. Esika, París.
Title: “From Kant’s categorical imperative to Fritz Jahr’s
bioethical imperative: toward the globalization on ethics.”
Authors: María Isabel Cornejo-Plaza and Eduardo
Rodríguez-Yunta1
Interdisciplinary Center for Studies on Bioethics, University
of Chile
ABSTRACT
There are evident coincidences among the moral principles and
maxims of Immanuel Kant’s: “human beings should be treated as
ends rather than as means”, “one should never act in a way
that one could not also will that this maxim should be a
universal law”; and Fritz Jahr’s bioethics imperative:
"respect every living being in general as an end in itself
1 Isabel Cornejo Plaza, Lawyer LL.M. Eduardo Rodríguez-Yunta, PhD in
Biology. Comments by Prof. Fernando Lolas are appreciated.
Interdisciplinary Center for Studies on Bioethics, University of Chile.
and treat it as such, as much as possible”. Both ethical
maxims consider humans as a superior being, donned with
dignity and autonomy. It is evident in both that human
beings have the freedom to willingly make decisions for
themselves due to their capacity of discernment. Jahr´s
bioethical imperative can be considered "categorical" such as
in the Kantian imperative. But, in Jahr´s imperative is not
always categorical. It is first of all a hypothetical
imperative, which could become categorical if every living
being could actually be treated as an end in itself. If this
actually does happen, then the hypothetical imperative would
become categorical. Jahr asserts that to respect nonhuman
living beings “as much as possible” is going a step further
by incorporating the effects of human decisions on other
living beings that live with humans in a delicately
interconnected ecosystem. In a globalized world, this vision
is more relevant than ever since technological
advances impose dilemmas and challenges that cannot be
addressed locally. Efforts to find relevant solutions for a
multicultural and globalized world require a universal
ethics. This is a position rooted in continental European
tradition rather than North American bioethics, perhaps more
appropriate for a globalizing proposal. For the role of
bioethics it could be a good way to revitalize the Kantian
ethical principle that humans act with such responsibility
and dignity so that their actions could be considered moral.
But in a global world, the ethics proposed by Jahr are even
more ambitious and necessary in the fragile world in which we
live.
INTRODUCTION
Bioethics as a science has been progressively set as a common
platform where experts collaborate from disciplines as
diverse as medicine, philosophy, law, theology, anthropology
and social sciences to solve common problems in the
healthcare field, relationships with the biosphere, the
environment and the impact of technology on medical and
scientific applications. While bioethics has developed mainly
in the biomedical healthcare field, in relation to healthcare
professionals and their interactions with patients, concerns
are increasingly encompassing global issues including respect
and protection of living beings in general. This global
conception was present in the origin of the term bioethics by
the German theologian Fritz Jahr and by the United States
oncologist Van Rensselaer Potter. Since the beginning,
bioethics has had the mission of bridging science and
humanities, by reflecting on the relationship between
science, technology and ethics both in procedural and
sociocultural ways. Bioethics contributes with its
methodology in the development of dialogue between science
and philosophy in a pluralistic, interdisciplinary and
humanitarian environment. In the scientific and technological
era in which we live, a philosophical and anthropological
reflection complementary to ethics is particularly necessary,
in order to protect human beings and the environment. Science
and technology tend to be considered as exclusive criteria of
knowledge and immediate basis for decision making.
BIOETHICS BACKGROUND
Bioethics was founded on a system of ethical argumentation
with four levels of justification: theories, principles,
norms and individual cases. In a philosophical framework, the
North American principle based way of arguing has been the
more developed school of thought, which is derived from
diverse theories differing in the justification of
principles, but coinciding in norms derived and decision
making procedures based on principles. Beauchamp and
Childress2 established four important principles in
reflection about clinical practice: the duty to respect the
self-determination of the patient (autonomy), the duty of
doing good (beneficence), the duty of avoiding damage (non
maleficence) and the duty to promote equality (justice).
These principles are a point of departure, but they are not
absolutes, but intermediate prima facie, that is they lead to the
judgment of ethical actions and they are instruments of
analysis, helping to discern whether an action is right or2 Beauchamp T and Childress J, Principles of Biomedical Ethics, 1979.
wrong. They are useful for argumentation since they are
accepted by different ethical theories, being universal and
with a greater consensus than theories. One difficulty lies
in the argumentation; the four principles must be weighed or
subjected to hierarchical order, since they frequently enter
into conflict when making decisions. For example, autonomy of
the patient facing the point of view of beneficence of the
physician or to benefit a particular case against equality
when there are scarce resources. The diverse origin of the
theories giving base to principles raises diverse problems.
It is difficult to conciliate a deontological Kantian ethic,
in which the center of moral action is duty, with utilitarian
bioethics, in which the center of moral action is the
consequences, when the decision making arguments may be
opposing. People may have difficulty in understanding each
other because they have different concepts of the world and
of life and therefore they differ in the hierarchy of values.
Furthermore, these four principles need to be complemented by
other principles when referring to the relationship with the
environment. The power of human beings over themselves and
over nature grows and is modified thanks to biotechnology
development, but risks and the possibilities of perverse use
to damage the biosphere also increase. The philosopher Hans
Jonas advocates the principle of responsibility, which must
extend up to the effects that human actions reach, which can
manipulate life and deeply alter the environment. This
responsibility implies at least two exigencies: that future
generations will have an environment and a biodiversity at
least similar to the current one and that human genetic
identity must not be altered3. When considering large
temporal and special periods, new moral obligations towards
generations and towards other non-human living beings appear,
for which a special, non-rational, treatment is expected.
In order to be grounded, bioethics needs, beyond
intermediary principles, an ontological unifying principle
facing the conflicts between science, technique and ethics.
Since it is the human being who reflects ethically, there
must be an anthropological foundation to provide a real basis
to ethics. There is an ethical premise that allows meta
ethical justification based on anthropology: the Kantian
principle stating that a human being is a person with dignity
which can not be treated as a means, only as an end in
himself/herself. United in this premise is that all human
beings are equal in dignity, everyone, without distinction,
deserves respect. Ethics cannot be based only on reason, even
when gaining universality, since reason needs principles and
normative content with a basis, which is located in the
anthropological constitution of humans. The ethical
preoccupation for others can not be simply based on looking
for common agreements by consensus to safe guard particular
interests, nor on a coercive system based on normative
3 Jonas H. El principio de responsabilidad. Ensayo de una ética para la civilización tecnológica,1979.
universalization according to a Universalist logic of reason.
Rather, the ethical preoccupation for others, including human
and other living beings, is understood by an anthropology
which includes human capacity to interact with others. The
philosopher Brussino believes that human beings inserted in
reality originate an “ontological community”, from which
ethics receives its first principle, since it is the unique
absolute principle, which has neither exceptions nor
prescriptive content4. This principle is “respect, equal
treatment and consideration to all human beings in virtue of
their personal dignity” and to other living beings in virtue
of their intrinsic dignity. This principle is not based on
reason, rather pre-rational, and all rationalities must
respect it and allow it to govern the process of reasoning,
other principles and decision making procedures. Bioethics
must depart from the respect to the dignity of human and the
dignity of other living beings, acknowledging all the
elements that it encompasses.
The concept of dignity (dignitas) was originated in Rome prior
to the Imperium with the meaning of merit attributed to the
way of life, social, political and moral; it was considered a
personal achievement which gave right to power but with the
exigency of a duty5. Then, in the evolution of the concept the
4 Brussino, S. L. Bioética, Racionalidad y Principio de Realidad. Cuadernos de Bioética 1996; 0: 39-48.5 Rodríguez Guerro, A., y Chuaqui Jahiatt, B., “Notas sobre la Evolucióndel Concepto de Dignidad,”Ars Medica, Revista de Estudios Médicos Humanísticos 2002;6: 11-14.
political and the moral were separated, where dignity became
the essential predicate of the person, not restricted to a
specific elite due to merit, but belonging to all human beings
because of being human6. Dignity gives personal character to
human beings. Later, with the expansion of Christian ideas,
the human being was considered a unique and unrepeatable
person, where all individuals of same species have equal
dignity.7 All human beings have equal dignity because they are
the image of God and their life has value as a way of
salvation. In contrast, other living beings have dignity or
intrinsic value according to their own ontology, which human
beings have the capacity to recognize. Thus, “religion can
provide justifying ethics for people who are religious in the
right way; we have ample illustration of this in the familiar
moralizing of sacred texts. Such people understand living well
to mean respecting or pleasing a god, and they can interpret
their moral responsibilities by asking which view of those
responsibilities would best respect or most please that god.
But that structure of thought could be helpful, as a guide to
integrating ethics and morality, only for people who treat
some sacred text as an explicit and detailed moral rule book.
People who think only that their god has commanded love for
charity to others, as Dworkin believes many religious people
do, cannot find, just in command, any answers to what morality
6 Ibid.7 Rodríguez Guerro, A., “La Persona Humana, Algunas Consideraciones”, ArsMedica, Revista de Estudios Médicos Humanísticos 2002; 6: 121-140.
requires. In any case, He believes “that shall not rely on
idea of any divine book of detailed moral instruction here”.
Plato and Aristotle tried to show the true character of each
of the main moral and political virtues by relating each to
others, and then to the broad ethical ideals their translator
summarize as happiness. Dworkin said that we need a statement
of what we should take our personal goals to be that fits with
and justifies our sense of what obligations, duties, and
responsibilities we have to others. This characterization
seems to fit Kant´s moral program. 8
THE BIOETHICAL IMPERATIVE OF FRITZ JAHR
Fritz Jahr was the first to come up with the term bioethics9,
as a new discipline and moral attitude in correspondence with
the notion of biopsychology proposed by the philosopher and
psychologist Rudolf Eisler, whose idea was to define the soul
or psychology present in the different forms of life. For
Eisler10, psychological actions are means to regulate or
8 Dworkin, Ronald. Justice for Hedgehogs. The Belknap Press of Harvard University Press.2011. Pág 193-195.9 Jahr F. Bio-Ethik. Eine Umschau über die ethischen Beziehungen desMenschen zu Tier und Pflanze. [Bio-Etica: Un análisis de la relaciónética de los seres humanos con los animales y las plantas] Kosmos.Handweiser für Naturfreunde 1927, 24(1): 2-4. Lolas Stepke F. Bioethics andanimal research. A personal perspective and a note on the contribution ofFritz Jahr, Biol Res 2006; 41: 119-123.10 Eisler, ‘Biopsiquis’. Diccionario científico ‘Wörterbuch der philosophischenBegriffe’ (1910, 3. ed., Bol. 1, p. 192).
modify the acts of life and are present in all forms of life
with a developed nervous system.
Jahr proposed a bioethical imperative for all living beings,
derived from Kant’s moral principle for human beings (treat
other human beings as ends in themselves, never as means”):
“respect every living being in general as an end in itself
and treat it as such as much as possible”11. Jahr emphasizes
the importance of ethical feeling, empathy, compassion and
help towards animals and plants as part of moral and social
obligations that human beings ought to feel for others. When
dealing with living beings it must be understood that each
species and nature itself is an ends in itself.
Jahr and his bioethical imperative are visionary and
consistent. If we were able to extrapolate the theory of
systems to globalization, we would say that each living being
is so fundamental in the complex net of the ecosystem that
the survival of any in the long range without one of them
would be impossible. In the theory of systems an entity is
more than the sum of its parts. Thus, the most rational
species –that with greater development of cerebral cortex,
homo sapiens- achieves the realization of civilizations, which
are built based on interdependence and collaboration among
species in a unique proper scenario, the earth.
Living beings aim for preservation and survival. Animal
ethics and human ethics are not in conflict; to the contrary,
they complement each other. While, Kant’s moral imperative11 Jahr F. ‘Tierschutz und Ethik’ (La protección de los animales y la ética), 1928
only considers human beings and has a formal character, the
Jahr’s imperative covers all living beings and their
interactions, having a pragmatic and flexible character. Jahr
analyzes the impact of science and technology on human
ethics, which can be extended to all living beings. The
dignity or “sanctity of life” is the basis for the bioethical
imperative of Jahr, not only for humans as ends in themselves
and subjected to moral law. While animals can not apply this
law to themselves, moral law is applicable to them by human
beings. One cannot treat a living being without dignity with
psychology. Jahr holds that animal protection has a positive
effect on ethical conduct towards human beings, popular and
public education. While the moral Kant’s imperative may serve
as principle to ground a social moral, the Fritz Jahr’s
imperative may serve as principle to ground a global moral.
Between the Kantian imperative and the Jahr imperative there
are evident similarities: the Kantian imperative “act in such
a way, that you treat humanity, whether in your own person or
in the person of any other, never merely as a means to an
end, but always at the same time as an end is categorical.”
Jahr replaces the categorical ‘always’ by a hypothetical and
situational ‘if possible’; thus modifying the inflexible
categorical structure of Kant’s model into a pragmatic and
situational model of balancing moral principles, obligations,
rights, and visions in a Bioethical Imperative: Respect every
living being on principle as an end in itself and treat it,
if possible, as such!.12
When Kant points out imperatively that one should treat
each human being as an end in himself/herself, never as a
means, he does not put his proposal into condition. Kant
argues that:
“When I think of categorical imperative I know at once
what it contains, beyond the law, only the necessity
that the maxim be in conformity with this law, while
the law contains no condition to which it would be
limited, nothing is left with which the maxim of
action is to conform but the universality of a law as
such; and this conformity alone is what the imperative
properly represents as necessary”.13
Jahr, at first, is hypothetical, when he said: “treat every
living being as an end in itself as much as possible”. The
imperative does allow exceptions. On his part, Jahr shows in
his proposal a caveat, which is the condition: “treat every
living being as an end in itself as much as possible”. We
could think that we have a hypothetical imperative when
saying “as much as possible”, so that when it is not possible12 Hans-Martin Sass. The many faces and colors of the bioethics imperative. Ed. Mazur Amir, Hans-Martin Sass. Fritz Jahr and Foundations of Global Bioethics. The Future of Integrative Bioethics. Ethik in der Praxis / Practical Ethics – Studien / Studies,(Berlin),vol. 37, 2012.
13 Eterovic Igor. Kant´s categorical imperative and Jahr´s bioethical imperative. Ed. MazurAmir, Hans-Martin Sass. Fritz Jahr and Foundations of Global Bioethics. The Future of Integrative Bioethics. Ethik in der Praxis / Practical Ethics – Studien / Studies, (Berlin),vol. 37, 2012.
to treat a living being as an end in itself, then we are not
infringing the maxim of conduct.
THE IMPERATIVE BIOETHICAL OF FRITZ JAHR COULD BE CATEGORICAL
AS WELL.
Indeed, we must make a distinction. The first predicate in
Jahr inherently contains a conditional obligation, namely a
future event albeit uncertain, which depends on the birth or
termination of a right. Thus, “if possible, as such!”
contain a hypothetical imperative, because it contains a
condition within it. However, once the uncertainty of whether
or not it is possible that "living things can be treated as
an ends in themselves as much as possible" is dispelled, then
we should distinguish if:
1 -. Condition is met. (To treat every living thing .....),
then the hypothetical imperative becomes categorical and it
must follow the fate of the Kantian imperative.
2 - Condition is not met. Then it becomes true that you
cannot treat such living beings as an end in themselves, nor
as a means, to any degree, then that hypothetical imperative
remains in the same manner.
The intrinsic dignity of human ontology, from the Kantian
perspective, derives from the capacity of reasoning, proper
of the species homo sapiens. Therefore, the dignity assigned to
animals and other living beings is a human construction based
on the help they provide to human beings. Kant in his
“Metaphysics of customs” asks for the care and compassion
towards animals as moral obligation.14
In the categorical Jahr’s imperative this vision is not
opposed, rather “respect[s] every living being on principle
as an end in itself and treat[s] it, if possible, as such!”
indicating that a microorganism and a dog in an ecological
system have importance, but with different degrees of
dignity. The cerebral development of both is what makes the
difference, the biopsychology. While the more human being
attributes are found in a species, the more hierarchy it is
attributed, practically as dignity were a mirror of human
condition and the human being is the parameter with which the
dignity of all species is measured. Nevertheless, dignity is
an ontological idea that we can also build for the rest of
living beings. Cruelty towards other species with cortical
development, especially mammals, is considered in some
legislation a crime. Currently, globalization and its effects
have called into question cruel conducts toward animals and
great efforts are carried out to avoid unnecessary animal
suffering. We know that part of human survival depends on
sacrificing animals, nevertheless, the way in which these
aims are carried out, must be with respect and solidarity.
The idea of avoiding animal suffering is promoted permanently
by diverse groups advocating animal rights, legislations have
been timidly incorporating this aspect and all deontological14 Ob. Cit.9.Pg. 9.
research ethical guidelines consider that experimental
animals must not suffer during experimentation. Even though
these guidelines are not obligatorily endorsed until they are
part of the inner juridical order, their purpose is to aid in
training, developing and promoting a moral idea, which leads
towards the ethics of values and principles that Jahr viewed
prior to the beginning of considering burdens exerted by
globalization and its effects.
GLOBALIZATION AND BIOETHICAL IMPERATIVE
The concept of globalization is recent. After the cold war,
and as a consequence of the triumph of the liberal economic
model, a certain social, political, economic and cultural
phenomenon started to arise and exacerbated with the coming
of the digital era or internet, which modified the way of
communicating and using information. The fall of the Berlin
wall constitutes an icon for this globalized era with the end
of cold war and the triumph of liberalism. Another
paradigmatic example was the change in management of
international security after the terrorist attack to the
World Trade Center in New York and the Pentagon on September
11, 2001. Since the Second World War, the development of
human rights had acquired a new relevance. Nevertheless,
after this terrorist attack the juridical challenge was to
elaborate theories which could legitimate the series of
restrictions to diverse human rights in favor of
international security and safeguarding new global threads of
international terrorism. Another great challenge under the
juridical point of view was how to carry out the diverse
strategic alliances of international commerce between very
diverse regions, trying not to exacerbate the structural
inequalities among different economies. How can you unify
intellectual property policies in countries whose view of
piracy is cultural and the economic impact so different? Is
it ethical to impose the same parameters of regulation of
industrialized countries to third world countries? No doubt,
these are questions which globalization presents.
Subsequently, when we speak about an ethics for
globalization, we sustain that Jahr’s bioethical imperative
could be considered a principle to establish equality, in the
sense of justice as fairness, universal guiding value, but
going beyond when this value is applied to each concrete
case. But, for this humankind has to be organized as
citizens, as free and equal people, in a democratic political
system where fair terms of cooperation specify an idea of
reciprocity, or mutuality: all who do their part as the
recognized rules require are to benefit as specified by a
public and agreed-upon standard.15
The economic and political liberal model, the globalization
era and the internet allow us to view the phenomenon of inter
15 Rawls John. Justice as Fairness. The Belknap Press of Harvard University Press.(Cambridge,Mass), 2003. P.6
connection as never before. This new reality, mirrors the
concept of a global village. The bewildering effects of
economic growth of industrialized nations were made visible
and quantified. The governments of economic powers consulted
scientists and intellectuals of the moment to analyze the
consequences of predatory growth. Then the theories of Jay
W. Forrester, Meadows and many others were presented, trying
to explain and predict through mathematical models the
consequences of global growth; case is point, the dynamic
theories of social systems. Conferences and Declarations such
as the Club of Rome in 1968 warned about considering the
limits of growth, setting the base for new disciplines such
as ecological politics, which includes environmental topics
and demographic development as a variable to consider public
policies and international relations.
Terms such as: sustainable, interconnection, interrelation,
cooperation, solidarity, precaution and responsibility are
included in all academic, political and social discourse as a
way of reasonably facing the accumulative global consumption,
understanding that natural resources are scarce and that
there is only one unrepeatable planet earth with total
interconnection among each living being upon it. As in a game
of chess, each intervention by humans in the ecosystem is a
movement that must be carefully studied, since consequences
may be irreversible. Under this new way of viewing the world,
moral dialogues and new ways to see human rights are
originated. It is now necessary to consider future
generations as subjects which, although may not exist now,
are expected to in the future. Therefore, the challenge lies
in ensuring them the possibility to enjoy a biodiversity,
which enriches and enhances humans in a multidimensional way.
The intrinsic interconnection of the global era is, without a
doubt, a system of infinite networks, such as neuronal
networks. The same thing happens with the view of a sick
person in anthropological medicine, in which patients need to
be seen as a number of superposed texts, read and interpreted
in conjunction even when only one aspect is looked at.
Between psychology and the body, a dialogue flows in such
silence that it can be externalized as evident unequivocal
signs of disease. Humans, as social beings, continue outside
of their own intertextuality to elaborate networks that reach
the environment, community and society in which they live,
forming an impenetrable web of relationships. Humans form a
web of connections among themselves shaping cultures and
civilizations. But the concept reaches other living species,
which are also interconnected in their simple or complex
structures of any nature and successively serving as a host
or parasite in the chain of survival of those more adapted,
as proposed by Darwin, through natural selection.
CONCLUSIONS
Kant’s categorical imperative does not apply to all living
beings, but only to rational human beings.
Jarh’s bioethical imperative, however, extends to all living
beings. With Jahr, the imperative begins as hypothetical, as
it intrinsically contains the condition to treat every living
being as an end in itself, as much as possible.
If the condition is met, i.e., it becomes true that it
cannot be treated as a means to a living being, then the
hypothetical imperative becomes categorical. Within the
categorical there will be degrees of dignity, in accordance
with the cell and cortical development of every living being.
The categorical imperative, applicable to humans, is expanded
by Fritz Jahr to all living beings. Although in his writings
he is careful to distinguish between his position and those
found in Oriental philosophies, pastor Jahr emphasizes that,
if possible, they deserve respect and care. Not only because
they are capable of pain and suffering, as Kant would argue,
but because they all share with humans the fact that they are
living creatures. His imperative is hypothetical insofar as
it allows for the possibility of respecting them within
reasonable limits.
If within the consensus we understand we can never treat
humans as a means, but always as an end, then it is
categorical that the ontological dignity must be respected by
everyone and in all circumstances. This is not so with a
microorganism or a plant.
However “globalization” requires us to understand that we are
all interconnected and interrelated in such a way that the
whole is more than the sum of its parts and is more than a
political label and should be used in a more comprehensive
meaning.
We must use the principles as rationality, solidarity,
responsibility, equity and sustainability to enable the
survival of the human species. This is the subject to the
survival of all living species, in different degrees.
Finally, for all these considerations, we believe the Jahr’s
ethic, is best suited to the era of globalization.
REFERENCES
1.- Beauchamp T and Childress J, Principles of Biomedical Ethics, 1979.
2.- Jonas H. El principio de responsabilidad. Ensayo de una ética para la
civilización tecnológica, 1979.
3.- Brussino, S. L. Bioética, Racionalidad y Principio de Realidad.
Cuadernos de Bioética 1996; 0: 39-48.
4.- Rodríguez Guerro, A., y Chuaqui Jahiatt, B., “Notas sobre
la Evolución del Concepto de Dignidad,”Ars Medica, Revista de
Estudios Médicos Humanísticos 2002; 6: 11-14.
6.- Rodríguez Guerro, A., “La Persona Humana, Algunas
Consideraciones”, Ars Medica, Revista de Estudios Médicos Humanísticos
2002; 6: 121-140.
7.- Dworkin, Ronald. Justice for Hedgehogs. The Belknap Press of
Harvard University Press. 2011.
8.- Jahr F. Bio-Ethik. Eine Umschau über die ethischen
Beziehungen des Menschen zu Tier und Pflanze. [Bio-Etica: Un
análisis de la relación ética de los seres humanos con los
animales y las plantas] Kosmos. Handweiser für Naturfreunde 1927,
24(1): 2-4.
9.- Lolas, F. Bioethics and animal research. A personal
perspective and a note on the contribution of Fritz
Jahr. Biological Research (Santiago) 41: 119-123, 2008.
11.- Lolas, F. El “imperativo bioético” de Fritz Jahr y la