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If we knew what it was we were doing, it would not be called research, would it?

Imagination is everything. It is the preview of life's coming attractions.

Imagination is more important than knowledge.

In matters of truth and justice, there is no difference between large and small problems, for issues concerning the treatment of people are all the same.

In order to be an immaculate member of a flock of sheep, one must above all be a sheep oneself.

Information is not knowledge.

Insanity: doing the same thing over and over again and expecting different results.

Intellectual growth should commence at birth and cease only at death.

Intellectuals solve problems, geniuses prevent them.

You ask me if I keep a notebook to record my great ideas. I've only ever had one.