Physicians had gone to their graves calling Pasteur a liar, a fool, or worse—without examining evidence which their “common sense” told them was impossible.

Hate always sells well, but for repeat trade and the long pull happiness is sounder merchandise.

Mighty little force is needed to control a man whose mind has been hoodwinked; contrariwise, no amount of force can control a free man, a man whose mind is free. No, not the rack, not fission bombs, not anything - you can't conquer a free man; the most you can do is kill him.

Thinking doesn't pay. Just makes you discontented with what you see around you.

It seems to me that the secret of true happiness in life is to know what you are and then be content to be that, in style, head up and proud, and not yearn to be something else.

...revolutions are not won by enlisting the masses. Revolution is a science for the few who are competent to practice it. It depends on correct organisation and above all, on communications.

It is impossible for anyone to be responsible for another person's behavior. The most you or any leader can do is to encourage each one to be responsible for himself.