Anytime we're interacting with someone, we're judging them, we're sharing expectations, we think they didn't live up to those expectations.

It only takes twenty generations of selective breeding to create large differences or appearance and behavior in other mammals.

Even if you have a brain predisposed to liberalism, you might end up with some conservative friends or find inspiring conservative role models who could be very influential on you, and that could send you down a different track in life.

Legalizing homosexuality is not the first step on a slippery slope to legalizing everything.

In real life, however, you don't react to what someone did; you react only to what you think she did, and the gap between action and perception is bridged by the art of impression management. If life itself is but what you deem it, then why not focus your efforts on persuading others to believe that you are a virtuous and trustworthy cooperator?

I did say that in-group, authority and purity are necessary for the maintenance of order, but I would never give them a blanket endorsement.

Morality binds people into groups. It gives us tribalism, it gives us genocide, war, and politics. But it also gives us heroism, altruism, and sainthood.