Never presume that just because you disagree with an idea that you must be correct.

Extreme skepticism and extreme gullibility are two equal ways of not having to think at all. And I don't think I'm the first to say that.

If something comes up that is completely freaky, it's spiritual-looking to the scientist, the first explanation is not going to be that it's God, because the history of that has failed. It would have to be, like, the hundredth explanation.

Facts are true whether or not you believe them.

If you're a scientist, and you have to have an answer, even in the absence of data, you're not going to be a good scientist.

In America, there are people who don't read science fiction but still think about tomorrow, so it's not only the force of science-fiction that makes you a tomorrow thinker.

Everyone should have their mind blown once a day.