Fear is the main source of superstition, and one of the main sources of cruelty. To conquer fear is the beginning of wisdom.

To fear love is to fear life, and those who fear life are already 3-parts dead.

Obscenity is what happens to shock some elderly and ignorant magistrate.

Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.

Of all forms of caution, caution in love is perhaps the most fatal to true happiness.

A stupid man's report of what a clever man says can never be accurate, because he unconsciously translates what he hears into something he can understand.

The factory of the future will have only two employees, a man and a dog. The man will be there to feed the dog. The dog will be there to keep the man from touching the equipment.

The tragedy of life is not that man loses but that he almost wins.

Look for the ridiculous in everything and you find it.

Color is a matter of taste and of sensitivity.

That's the trouble with the world. We all despise ourselves.

Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you.

My concern is not whether God is on our side; my greatest concern is to be on God's side, for God is always right.

How old would you be if you didn’t know how old you are?

There is a fundamental difference between religion, which is based on authority, and science, which is based on observation and reason. Science will win because it works.