The worst drug of all by far is tobacco; the death toll from tobacco is just overwhelming.

During the 1960s, large groups of people who are normally passive and apathetic began to try to enter the political arena to press their demands.... The naive might call that democracy, but that's because they don't understand. The sophisticated understand that that's the crisis of democracy.

No use in waiting, we can all work hard to bring about changes.

Peter Kropotkin was surely on the left. He was one of the founders of what is now called 'sociobiology' or 'evolutionary psychology' with his book Mutual Aid, arguing that human nature had evolved in ways conducive to the communitarian anarchism that he espoused.

If you claim to have a theory that deduces unexpected consequences from nontrivial principles, let's see it.

Virtually all informed observers agree that a fair and equitable resolution of the plight of the Palestinians would considerably weaken the anger and hatred of Israel and the US in the Arab and Muslim worlds - and far beyond, as international polls reveal. Such an agreement is surely within reach, if the US and Israel depart from their long-standing rejectionism.

Scientists generally, not just evolutionary biologists, don't take much for granted.