Silence is the most perfect expression of scorn.
Science becomes dangerous only when it imagines that it has reached its goal.
Revolutionary movements attract those who are not good enough for established institutions as well as those who are too good for them.
No sooner had Jesus knocked over the dragon of superstition than Paul boldly set it on its legs again in the name of Jesus.
No man who is occupied in doing a very difficult thing, and doing it very well, ever loses his self-respect.
Nature holds no brief for the human experiment: it must stand or fall by its results. If Man will not serve, Nature will try another experiment.
I never resist temptation, because I have found that things that are bad for me do not tempt me.
Hatred is the coward’s revenge for being intimidated.
Every person who has mastered a profession is a skeptic concerning it.
Caesar was a man of great common sense and good taste, meaning thereby a man without originality or moral courage.
You use a glass mirror to see your face: you use works of art to see your soul.
You see things; and you say ‘Why?’ But I dream things that never were; and I say ‘Why not?’