The first rule is not to lose. The second rule is not to forget the first rule.
Worse than any severe mental illness, is the illness of bigotry.
All real philosophers have been artists in the realm of concepts.
Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.
Everything must be made as simple as possible. But not simpler.
The best brains of the Nation may be found on the last benches of the Classroom
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!
If you’re afraid – don’t do it, – if you’re doing it – don’t be afraid.
If you are going through hell, keep going.
Freedom is the right to tell people what they do not want to hear.