Imagination is greater than knowledge.

I make it a rule not to clutter my mind with simple information that I can find in a book in five minutes.

How can any educated person stay away from the Greeks? I have always been far more interested in them than in science.

One should not pursue goals that are easily achieved. One must develop an instinct for what one can just barely achieve through one’s greatest efforts.

The strength of the Constitution lies entirely in the determination of each citizen to defend it. Only if every single citizen feels duty bound to do his share in this defense are the constitutional rights secure.

The only real valuable thing is intuition. The intellect has little to do on the road to discovery

Everything what's inspiring has been created by one who could work in freedom