Knowledge of what is does not open the door directly to what should be.

Information is not knowledge.

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

Isn’t it strange that I who have written only unpopular books should be such a popular fellow?

Intellectuals solve problems, geniuses prevent them.

It is a miracle that curiosity survives formal education.

It is the supreme art of the teacher to awaken joy in creative expression and knowledge.

It should be possible to explain the laws of physics to a barmaid.

It’s not that I’m so smart, it’s just that I stay with problems longer.

Joy in looking and comprehending is nature’s most beautiful gift.

Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.

Morality is of the highest importance – but for us, not for God.

Love is a better teacher than duty.

Mozart’s music is so pure and beautiful that I see it as a reflection of the inner beauty of the universe.

Nationalism is an infantile disease. It is the measles of mankind.

Never lose a holy curiosity.

No problem can be solved from the same level of consciousness that created it.

If the facts don’t fit the theory, change the facts.

The true sign of intelligence is not knowledge but imagination.