But then with me the horrid doubt always arises whether the convictions of man's mind, which has been developed from the mind of the lower animals, are of any value or at all trustworthy.

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 a poet digs himself into a hole, he doesn't climb out. He digs deeper, enjoys the scenery, and comes out the other side enlightened.

Every morning I jump out of bed and step on a landmine. The landmine is me. After the explosion, I spend the rest of the day putting the pieces together.

Nature gave men two ends-one to sit on and one to think with. Ever since then man's success or failure has been dependent on the one he used most.

In Britain, it's almost as if we're ashamed of having ambition and drive.

Ten minutes praying is better than a year's murmuring.

I’m happy when what I’m doing is helping people and unhappy when what I’m doing isn’t helping people.

Life for the Christian is a dialogue with God.

If you are serving justice to one person, those who have been affected should also be served some form of justice.

If you cannot be the master of your language, you must be its slave.

Ultimately, nothing should be more important to investors than the ability to sleep soundly at night.