A society that gets rid of all its troublemakers goes downhill.

Women and cats will do as they please, and men and dogs should relax and get used to the idea.

Never underestimate the power of human stupidity.

There is no way that writers can be tamed and rendered civilized or even cured. The only solution known to science is to provide the patient with an isolation room, where he can endure the acute stages in private and where food can be poked in to him with a stick.

I am free because I know that I alone am morally responsible for everything I do. I am free, no matter what rules surround me. If I find them tolerable, I tolerate them; if I find them too obnoxious, I break them. I am free because I know that I alone am morally responsible for everything I do.

The universe never did make sense; I suspect it was built on government contract.

May you live as long as you wish and love as long as you live.

The difference between science and the fuzzy subjects is that science requires reasoning while those other subjects merely require scholarship.

An armed society is a polite society. Manners are good when one may have to back up his acts with his life.

Love is that condition in which the happiness of another person is essential to your own... Jealousy is a disease, love is a healthy condition. The immature mind often mistakes one for the other, or assumes that the greater the love, the greater the jealousy.

A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity.

Everything is theoretically impossible, until it is done.

They didn't want it good, they wanted it Wednesday.

A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity.

It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so.

I never learned from a man who agreed with me.

When a place gets crowded enough to require ID's, social collapse is not far away. It is time to go elsewhere. The best thing about space travel is that it made it possible to go elsewhere.

Yield to temptation. It may not pass your way again.

One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen.