Across the sea of space, the stars are other suns.

Because men, compared to male chimps, have such relatively small testicles (large testicles indicate a species where many males mate, one after the other, with the same female), we might guess that promiscuous societies were uncommon in the immediate human past.

Other things being equal, it is better to be smart than to be stupid.

The Bill of Rights decoupled religion from the state, in part because so many religions were steeped in an absolutist frame of mind - each convinced that it alone had a monopoly on the truth and therefore eager for the state to impose this truth on others.

When permitted to listen to alternative opinions and engage in substantive debate, people have been known to change their minds. It can happen.

Religions are tough. Either they make no contentions which are subject to disproof or they quickly redesign doctrine after disproof. ... near the core of the religious experience is something remarkably resistant to rational inquiry.

Advances in medicine and agriculture have saved vastly more lives than have been lost in all the wars in history.