Extraordinary claims require extraordinary evidence.

There are no facts, only interpretations.

Don't take the wrong side of an argument just because your opponent has taken the right side.

I am dying from the treatment of too many physicians.

He who never made a mistake, never made a discovery.

The word 'good' has many meanings. For example, if a man were to shoot his grandmother at a range of five hundred yards, I should call him a good shot, but not necessarily a good man.

I am not now That which I have been.

When we are no longer able to change a situation - we are challenged to change ourselves.

A scientist in his laboratory is not a mere technician: he is also a child confronting natural phenomena that impress him as though they were fairy tales.?

He who surpasses or subdues mankind must look down on the hate of those below.

If from Society we learn to live Tis Solitude should teach us how to die; It hath no flatterers.

Charity ... is the opium of the privileged.

Let us try to teach generosity and altruism, because we are born selfish.

What is to give light must endure burning.

When something is important enough, you do it even if the odds are not in your favor.

How lucky I am to have something that makes saying goodbye so hard.

Design is not just what it looks like and feels like. Design is how it works.

Tomorrow is the most important thing in life. Comes into us at midnight very clean. It's perfect when it arrives and it puts itself in our hands. It hopes we've learned something from yesterday.

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

You're only given a little spark of madness. You mustn't lose it.

Self-esteem comes from being able to define the world in your own terms and refusing to abide by the judgments of others.