A chimpanzee who is really gearing up for a fight doesn't waste time with gestures but just goes ahead and attacks.

Morality, after all, has nothing to do with selflessness. On the contrary, self-interest is precisely the basis of the categorical imperative.

People want to work with somebody who feels shame, who worries about the perceptions of others. Dishonesty is something we don't like in others.

If both parties have a stake in the other, the chances of them killing each other are going to be reduced.

Darwin wasn't just provocative in saying that we descend from the apes - he didn't go far enough. We are apes in every way, from our long arms and tailless bodies to our habits and temperament.

Robin Hood had it right.Humanity's deepest wish is to spread the wealth.

After World War II it was decided that, in order to prevent the Germans and the French from having another war, it would be better to tie them together into one economic pact so they would invest in each other and have mutual stakes. Until now, that has worked to prevent warfare between the two.