All of us have moments in our lives that test our courage. Taking children into a house with a white carpet is one of them.

Extraordinary claims require extraordinary evidence.

I do not argue with obstinate men. I act in spite of them.

There is not such a cradle of democracy upon the earth as the Free Public Library, this republic of letters, where neither rank, office, nor wealth receives the slightest consideration.

Worry is the interest paid by those who borrow trouble.

Every man's memory is his private literature.

He who possesses most must be most afraid of loss.

The imagination is not a state: it is the human existence itself.

When the dog looks at you, the dog is not thinking what kind of a person you are. The dog is not judging you.

I don't try to imagine a personal god; it suffices to stand in awe at the structure of the world, insofar as it allows our inadequate senses to appreciate it.

Talk low, talk slow and don't say too much.

Since it is difficult to join them together, it is safer to be feared than to be loved when one of the two must be lacking.

The traditional ways were wrongly disowned by Christianity - in hindsight, medicine men were not demons but very important counsellors in the community.

You can have anything in this world you want, if you want it badly enough and you're willing to pay the price.

If the world was perfect, it wouldn't be.

I am one of those who think like Nobel, that humanity will draw more good than evil from new discoveries.

I find it rather easy to portray a businessman. Being bland, rather cruel and incompetent comes naturally to me.

If you never stop when you wave goodbye you just might find, if you give it time, you will wave hello again...

One's only rival is one's own potentialities. One's only failure is failing to live up to one's own possibilities. In this sense, every man can be a king, and must therefore be treated like a king.

Never accept a drink from a urologist.

Be that self which one truly is.