You can't blame science for being used for evil purposes. What you can do is say, 'This is an exceedingly powerful tool.' And you want to make sure it is used for good purposes, not bad ones. That is a political decision.

We have sexual lust even though we know perfectly well that, because we're using contraception, it is not going to result in the propagation of our genes. That doesn't matter, because the lust was built into our brains at a time when there was no contraception.

If something is true, no amount of wishful thinking will change it.

After sleeping through a hundred million centuries we have finally opened our eyes on a sumptuous planet, sparkling with color, bountiful with life. Within decades we must close our eyes again. Isn’t it a noble, an enlightened way of spending our brief time in the sun, to work at understanding the universe and how we have come to wake up in it? This is how I answer when I am asked—as I am surprisingly often—why I bother to get up in the mornings.

Offense is what people take when they can't take argument.

People really, really hate their religion being criticized. It's as though you've said they had an ugly face; they seem to identify personally with it.

There is something wrong with using faith - belief without evidence - as a political weapon. I wouldn't say there is something similar about using science. Science - or the products of science like technology - is just a way of achieving something real, something that happens, something that works.