That is the great mystery of human evolution: how to account for calculus and Mozart.

The two major challenges for the 21st century are to improve the economic situation of the majority and save as much of the planet as we can.

Individual versus group selection results in a mix of altruism and selfishness, of virtue and sin, among the members of a society.

Every kid has a bug period... I never grew out of mine.

Science needs the intuition and metaphorical power of the arts, and the arts need the fresh blood of science ... Interpretation is the logical channel of consilient explanation between science and the arts. The arts ... also nourish our craving for the mystical.

A society that condemns homosexuality harms itself. (254)

Homo sapiens, the first truly free species, is about to decommission natural selection, the force that made us. Soon we must look deep within ourselves and decide what we wish to become.