Is an instinct for perpetuating the human species an aspect of Ludwig Feuerbach's concept of species-being. ?
http://plato.stanford.edu/entries/ludwig-feuerbach/
" Chief among these (Feuerbach's ) themes are: (1) that the human organism is related to the world through its body and the senses (Sensuousness); (2) that the species-being (essence) of man is contained only in community which, however, "rests on the reality of the distinction between I and thou" (GW IX: 339; PPF 91); (3) that mind and body are just two aspects of one material organism; (4) that this organism is animated by an overwhelming drive for fulfillment (Glückseligkeitstrieb) which, in turn, manifests itself in needs and desires. Of these needs, the need for human community is fundamental as are also certain biological needs. Given these themes, the two dominant philosophical problems that emerge are (a) how to delineate the relationship between perception and thought in order to give an intelligible account of knowing and (b) how, after basing human nature on a drive to fulfillment, he can reconcile this with his ethics of altruism."
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