Eros and Thanatos in human evolution.
D005075:Biological Evolution; D001824:Body Constitution; D002490:Central Nervous System / Q000033:anatomy & histology / Q000502:physiology; D003491:Cybernetics; D005260:Female; D006801:Humans; D008297:Male; D011574:Psychoanalytic Theory; D012043:Regression, Psychology