The true sign of intelligence is not knowledge but imagination.

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

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.

A little knowledge is dangerous. So is a lot.

The important thing is not to stop questioning. Curiosity has its own reason for existing.

A clever person solves a problem. A wise person avoids it.

The only thing that you absolutely have to know, is the location of the library.

Where there’s a will there’s a way.

When you trip over love, it is easy to get up. But when you fall in love, it is impossible to stand again.

I do not much believe in education. Each man ought to be his own model, however frightful that may be.

The only reason for time is so that everything doesn’t happen at once.

I firmly believe that love is a better teacher than a sense of duty – at least for me.