This thesis deals with the ethical ideas contained in the
chosen publications of three prominent representatives of
biocentrism, concretely with human relationship with non-human
environment (animals and other organisms). For each of them is
introduced characteristic key word (equal consideration of
interests in the case of Singer, reverence for life in the case
of Schweitzer and respect for nature in the case of Taylor).
Similarities are found in the particular ideas of these
personalities – for example rejection of anthropocentrism  and
claim for expanding the sphere of moral concern, and also
differences – for example different boundaries of the sphere of
moral concern, the quality of argumentation, different view on
the influence of religion on ethics. There are suggested
probable causes of these differences. This thesis also deals
with the question whether are these ethical conceptions
suitable for ethical consumers (vegetarians, vegans and raw
foodists). It is concluded, that Singer´s ethical conception is
suitable for vegetarianists, and Schweitzer´s and Taylor´s
ethical conception are rather for vegans or raw foodists.