Nothing leads the scientist so astray as a premature truth.
When I was young I pitied the old. Now old, it is the young I pity.
Being right is less important to us than the freedom to be wrong.
I prefer the honest jargon of reality to the outright lies of books.
Science had better not free the minds of men too much, before it has tamed their instincts.
The least one can say of power is that a vocation for it is suspicious.