The whole of science is nothing more than a refinement of everyday thinking.
The deepest sin against the human mind is to believe things without evidence.
I am heartened to find so much wit in you, that you’d give thought to consequences and choose your way with reason, not passion only.
It is the mark of an educated mind, to entertain a thought without accepting it.
The only true wisdom is in knowing you know nothing.
Education is the ability to listen to almost anything without losing your temper or your self-confidence.
You cannot conquer a free man. The most you can do is kill him.
Somewhere, something incredible is waiting to be known.
An optimist believes we live in the best possible of worlds.- A pessimist fears that this is true.
The smallest minority on earth is the individual. Those who deny individual rights cannot claim to be defenders of minorities.