Scientists can have their judgment clouded by their professional aspirations. And the pure truth of faith, which you can think of as this clear spiritual water, is poured into rusty vessels called human beings, and so sometimes the benevolent principles of faith can get distorted as positions are hardened.

There does seem to be a sense in which physics has gone beyond what human intuition can understand. We shouldn't be too surprised about that because we're evolved to understand things that move at a medium pace at a medium scale. We can't cope with the very tiny scale of quantum physics or the very large scale of relativity.

When we talk about genes for anything, like a gene for being gay or a gene for being aggressive or something of that sort, that a gene for anything may not have been a gene for that thing under different environmental conditions.

The only watchmaker is the blind forces of physics.

With respect to those meanings of 'human' that are relevant to the morality of abortion, any fetus is less human than an adult pig.

I think Douglas [Adams] is writing with an eye to irony for adults at the same time as entertaining children.

We're going to die, and that makes us the lucky ones.