Are we moral by nature or as a result of learning and culture? Are men and women "hard-wired" to think differently? Do our genes or our schools make us intelligent? These all seem like important questions, but maybe they have no good scientific answer...

...As the anthropologist Pascal Boyer points out in his answer, it's tempting to talk about "the culture" of a group as if this is some mysterious force outside the biological individual or independent of evolution. But culture is a biological phenomenon. It's a set of abilities and practices that allow members of one generation to learn and change and to pass the results of that learning on to the next generation. Culture is our nature, and the ability to learn and change is our most important and fundamental instinct.