i enjoy Robert Heinlein's takes:

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

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

Anyone who considers protocol unimportant has never dealt with a cat.

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

Being right too soon is socially unacceptable.

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.

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

Everything is theoretically impossible, until it is done.

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

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.

I don't see how an article of clothing can be indecent. A person, yes.

I never learned from a man who agreed with me.

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.

It's an indulgence to sit in a room and discuss your beliefs as if they were a juicy piece of gossip.

"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.

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

Never insult anyone by accident.

Never underestimate the power of human stupidity.

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

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

Of all the strange "crimes" that human beings have legislated of nothing, "blasphemy" is the most amazing - with "obscenity" and "indecent exposure" fighting it out for the second and third place.

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

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

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

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.

Sex without love is merely healthy exercise.

The supreme irony of life is that hardly anyone gets out of it alive.

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

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.

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

To be matter-of-fact about the world is to blunder into fantasy - and dull fantasy at that, as the real world is strange and wonderful.

When any government, or any church for that matter, undertakes to say to its subjects, This you may not read, this you must not see, this you are forbidden to know, the end result is tyranny and oppression no matter how holy the motives.

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

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

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

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