All of a sudden, space isn't friendly. All of a sudden, it's a place where people can die. . . . Many more people are going to die. But we can't explore space if the requirement is that there be no casualties; we can't do anything if the requirement is that there be no casualties.

The fundamentalists deny that evolution has taken place; they deny that the earth and the universe as a whole are more than a few thousand years old, and so on. There is ample scientific evidence that the fundamentalists are wrong in these matters, and that their notions of cosmogony have about as much basis in fact as the Tooth Fairy has.

To bring about destruction by overcrowding, mass starvation, anarchy, the destruction of our most cherished values, there is no need to do anything. We need only do nothing except what comes naturally, and breed. And how easy it is to do nothing

Creationists make it sound as though a 'theory' is something you dreamt up after being drunk all night.

The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.

The Bible contains legendary, historical, and ethical contents. It is quite possible to consider them separately, and one doesn't have to accept the legends in order to get the ethics. Fundamentalists make a grave mistake to insist on the letter of the writings, because they drive away many who can't swallow the Adam-and-Eve bit.

Intuition is the art, peculiar to the human mind, of working out the correct answer from data that is, in itself, incomplete or even, perhaps, misleading.