Morals - all correct moral laws - derive from the instinct to survive. Moral behavior is survival behavior above the individual level.

If a grasshopper tries to fight a lawnmower, one may admire his courage but not his judgement.

Love is that condition in which the happiness of another person is essential to your own.

You can sway a thousand men by appealing to their prejudices quicker than you can convince one man by logic.

Never underestimate the power of human stupidity.

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

I never learned from a man who agreed with me.

A generation which ignores history has no past — and no future.

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.

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

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 was good to walk into a library again it smelled like home.

Forgiving yourself can prove as difficult as licking a scab off your elbow.

You more than anyone else dederve to be loved and happy. Do not remain in any relationship that robs you of those two things.

We have always known that heedless self interest was bad morals, we now know that it is bad economics.

Politics is for the present, but an equation is for eternity.

Criticism exists only to recognize the truth, not to act as judge.

Go at least once a year to a place you've never been before.

... the natural world is the old river that runs through everything, and I think poets will forever fish along its shores.

Long conversations with pals when neither you nor they have had a drink can be a test of palship.

I've worked with some great orchestras and amazing classical musicians, but I don't like the conceptualization of classical music as an elitist form of art.