Only the fittest will survive.

The love for all living creatures is the most noble attribute of man.

A man who dares to waste one hour of time has not discovered the value of life.

The world will not be inherited by the strongest, it will be inherited by those most able to change.

Nothing exists for itself alone, but only in relation to other forms of life

Building a better mousetrap merely results in smarter mice.

A mathematician is a blind man in a dark room looking for a black cat which isn't there.

An American monkey, after getting drunk on brandy, would never touch it again, and thus is much wiser than most men.

It is not the biggest, the brightest or the best that will survive, but those who adapt the quickest.

We can allow satellites, planets, suns, universe, nay whole systems of universes, to be governed by laws, but the smallest insect, we wish to be created at once by special act.

What a book a devil's chaplain might write on the clumsy, wasteful, blundering, low, and horribly cruel work of nature!

When I think about books, I touch my shelf.

We must be happy with what we want when we are in pursuit of what we want.

Congress doesn't regulate Wall Street. Wall Street regulates Congress.

When you oppress people either by gender, by race, by sexual orientation, when you do that and the doors become ajar, they will fly open and they will come and they have.

I think every Internet user likes personalization.

Joy is not dependent on circumstances; it is your own. It is not a titillation produced by things; it is a state of peace, of silence-a meditative state. It is spiritual.

To be free from all egoistic motive, careful of truth in speech and action, void of self-will and self-assertion, watchful in all things, is the condition for being a flawless servant.

There's nothing like a great piece of theater - a great performance in a great piece of theater.

Wisdom and deep intelligence require an honest appreciation of mystery.