He reconstructs erotic love in terms of genetic phenomenology being the source of self-consciousness, a position that he recently sought out to underpin through socio biology. In his later essays, Fellmann argues that the „eccentric positionality“ of man's self-consciousness is the outcome of his exceptional sexuality, namely the constant erotic susceptibility apart from procreation. His attempt to connect biology and philosophy has been acclaimed. Recently he coined the term "Erosoph" (Erosopher) in analogy to a philosopher who combines Logos with Eros. This neologism has been received positively by a broader public. Fellmann's philosophical position is outstanding in German academic tradition by his attempt to transform the fundamental questions of metaphysics and ontology into anthropological descriptions and practical devices. His work shows a sound historical knowledge reformulated in the scope of a realistic reconstruction of the human world of life including the various forms of symbolic representation. Thus, he avoids a naturalistic reduction balancing out transcendental idealism and pragmatic realism. The philosopher to whom Fellmann refers in most of his texts is Schopenhauer, the father of modern Philosophy of Life, regarding the world as Will and Representation.