Some people think that evolutionary psychology claims to have discovered that human nature is selfish and wicked. But they are flattering the researchers and anyone who would claim to have discovered the opposite. No one needs a scientist to measure whether humans are prone to knavery. The question has been answered in the history books, the newspapers, the ethnographic record, and the letters to Ann Landers. But people treat it like an open question, as if someday science might discover that it's all a bad dream and we will wake up to find that it is human nature to love one another.

Disgust is intuitive microbiology

Anything that makes it easier to imagine trading places with someone else increases your moral consideration for that other person.

The rules of friendship are tacit, unconscious; they are not rational. In business, though, you have to think rationally.

Commerce is a noble profession, and Jews should get over any self-hatred they might harbor from contemplating the capitalist spirit of diaspora Judaism.

I have never been a fan of science fiction. For me, fiction has to explore the combinatorial possibilities of people interacting under the constraints imposed by our biology and history. When an author is free to suspend the constraints, it's tennis without a net.

Equity feminism is a moral doctrine about equal treatment that makes no commitments regarding open empirical issues in psychology or biology.