If one devalues rationality, the world tends to fall apart.
Study without desire spoils the memory, and it retains nothing that it takes in.
To him who looks upon the world rationally, the world in its turn presents a rational aspect. The relation is mutual.
Science cannot solve the ultimate mystery of nature. And that is because, in the last analysis, we ourselves are a part of the mystery we are trying to solve.
An expert is a person who has made all the mistakes that can be made in a very narrow field.
The intuitive mind is a sacred gift – and the rational mind is a faithful servant. – We have created a society that honors the servant – and has forgotten the gift.
I mean, you could claim that anything’s real if the only basis for believing in it is that nobody’s proved it doesn’t exist!
Never mistake motion for action.
Space is big. You just won’t believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it’s a long way down the road to the chemist’s, but that’s just peanuts to space.
Worse than any severe mental illness, is the illness of bigotry.