Quotes By Robert A. Heinlein

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.

One man's "magic" is another man's engineering. "Supernatural" is a null word.

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

Everything is theoretically impossible, until it is done.

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

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.

One of the sanest, surest, and most generous joys of life comes from being happy over the good fortune of others.

I never learned from a man who agreed with me.

Never worry about theory as long as the machinery does what it's supposed to do.

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.

For me, politeness is a sine qua non of civilization.

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

You can have peace. Or you can have freedom. Don't ever count on having both at once.

Don't handicap your children by making their lives easy.

Be wary of strong drink. It can make you shoot at tax collectors... and miss.

Don't ever become a pessimist... a pessimist is correct oftener than an optimist, but an optimist has more fun, and neither can stop the march of events.

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

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

Political tags - such as royalist, communist, democrat, populist, fascist, liberal, conservative, and so forth - are never basic criteria. The human race divides politically into those who want people to be controlled and those who have no such desire.

Writing is not necessarily something to be ashamed of, but do it in private and wash your hands afterwards.

Being right too soon is socially unacceptable.

No statement should be believed because it is made by an authority.

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.

Never underestimate the power of human stupidity.

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

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

One man's theology is another man's belly laugh.

Never insult anyone by accident.

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.

Sex without love is merely healthy exercise.