All over the world, belief in the supernatural has authorised the sacrifice of people to propitiate bloodthirsty gods, and the murder of witches for their malevolent powers.

Disgust is intuitive microbiology

Pre-state societies were far more violent than our own.

We can make fun of hockey fans, but someone who enjoys Homer is indulging the same kind of vicarious bloodlust.

Theories of art carry the seeds of their own destruction.

Everyone's pedigree merges into everyone else's pedigree. So if you go back far enough, everyone is related.

Evolution is an indispensable component of any satisfying explanation of our psychology.