Further Bibliography
Richard Dawkins, The Selfish Gene (1976).

Sigmund Freud, " 'Civilized' Sexual Morality and Modern Nervous Illness" (1912).

Sigmund Freud, Totem and Taboo (1912).

Max Horkheimer and Theodor Adorno, The Dialectic of Enlightenment (1944); if you're interested, but haven't previously encountered this key text, you may find it helpful to consult, Martin Jay, The Dialectical Imagination: A History of the Frankfurt School (1973) and Susan Buck-Morss, The Origin of Negative Dialectics (1979).

Claude Lévi-Strauss, Tristes Tropiques (1955).

Jean-Jacques Rousseau, Discourse on the Origin of Inequality (also known as the Second Discourse, 1755), available online.

Oswald Spengler, The Decline of the West (1917).

Marianna Torgovnick, Gone Primitive: Savage Intellects, Modern Lives (1990).

E.O. Wilson, On Human Nature (1979).

Added after our discussion in class:
Freud-Einstein correspondence on war, available on-line.
Donna Haraway, "A Cyborg Manifesto" (1991) on-line version; this is in her Simians, Cyborgs, and Women: The Reinvention of Nature (1991).

Freud abstracts 
American Psychoanalytic Association  
No Subject (aka wiki-Lacan)  Psychology+Marxism
International Psychoanalytical Association
   Psychoanalytic Electronic Publishing
Psychoanalysis Arena (Routledge)
Anna Freud Centre    Freud Museum
IUB Libraries         JSTOR
Civilization and its Discontents, manuscript page