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

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

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.

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

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.

Never underestimate the power of human stupidity.

I never learned from a man who agreed with me.

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.

Never insult anyone by accident.

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

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.

Being right too soon is socially unacceptable.

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

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

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