I'm very much a Christian in ideals and ethics, especially in terms of belief in fairness, a deep set obligation to others, and the virtues of charity, tolerance and generosity that we associate with traditional Christian teaching.

The education of women is the best way to save the environment.

Character is in turn the enduring source of virtue. It stands by itself and excites admiration in others. It is not obedience to authority, and while it is often consistent with and reinforced by religious belief, it is not piety.

Women are extraordinary in lacking the estrus, or period of heat. The females of most other primate species become sexually active, to the point of aggression, only at the time of ovulation. Why has sexual responsiveness become nearly continuous? Unusually frequent sexual activity between males and females served as the principle device for cementing the pair bond.

I think history has shown that the worst way to [try to] bring people over and actually change public opinion is by insult and applied degradation of them.

The great challenge of the twenty-first century is to raise people everywhere to a decent standard of living while preserving as much of the rest of life as possible.

Destroying a tropical rainforest for profit is like burning all the paintings of the Louvre to cook dinner.