The equation for ego is: One over Knowledge.

It is just as important to make knowledge live and keep it alive as to solve specific problems.

To punish me for my contempt for authority, fate made me an authority myself.

I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.

Some men spend a lifetime in an attempt to comprehend the complexities of women. Others pre-occupy themselves with somewhat simpler tasks, such as understanding the theory of relativity!

A theory is something nobody believes, except the person who made it. An experiment is something everybody believes, except the person who made it.

The world is not full of evil because of those who do wrong. It is full of evil because of those who do nothing.