Humanity has the stars in its future, and that future is too important to be lost under the burden of juvenile folly and ignorant superstition.

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'

Although we will hate and fight the machines, we will be supplanted anyway, and rightly so, for the intelligent machines to which we will give birth may, better than we, carry on the striving toward the goal of understanding and using the Universe, climbing to heights we ourselves could never aspire to.

I expect death to be nothingness and, for removing me from all possible fears of death, I am thankful to atheism.

Saying something is 'too bad' is easy. You say you disapprove, which makes you a nice person, and then you can go about your business and not be interested anymore. It's a lot worse than 'too bad.' It's against everything decent and natural.

It was obvious that bigotry was never a one-way operation, that hatred bred hatred!

Maybe happiness is this: not feeling like you should be elsewhere, doing something else, being someone else.