Liberation from superstition is a necessary but not a sufficient condition for science.

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

But I try not to think with my gut. If I'm serious about understanding the world, thinking with anything besides my brain, as tempting as that might be, is likely to get me into trouble.

Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

If we long to believe that the stars rise and set for us, that we are the reason there is a Universe, does science do us a disservice in deflating our conceits?

Science is a way to call the bluff of those who only pretend to knowledge. It is a bulwark against mysticism, against superstition, against religion misapplied to where it has no business being.

It is morally as bad not to care whether a thing is true or not, so long as it makes you feel good, as it is not to care how you got your money as long as you have got it.

For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.

Claims that cannot be tested, assertions immune to disproof are veridically worthless, whatever value the may have in inspiring us or in exciting our sense of wonder.

All science asks is to employ the same levels of skepticism we use in buying a used car or in judging the quality of analgesics or beer from their television commercials.

If you want to save your child from polio, you can pray or you can inoculate. ... Choose science.

I am not afraid of anything in the world. But I'm afraid of myself, afraid of what I will be in the future.

Sometimes we care others more than they deserve!

I'm sick of following my dreams. I'm just going to ask them where they're goin', and hook up with them later.

Random, meaningless groups can adopt an us-versus-them mentality.

Anyplace market forces have been artificially removed by the government there is a total absence of incentives, competition, effective oversight, cost controls and so on.

From labor there shall come forth rest.

Learn to get excited like a child. There is nothing that has more magic than childish excitement.

I welcome death. In death there are no interviews!

Leadership is knowing what you want and making it happen.

If one were to live his life fully and completely were to give form to every feeling, expression to every thought, reality to every dream.