I am exclusively occupied with the problem of gravitation and hope with the help of a local mathematician friend [Marcel Grossman] to overcome all the difficulties. One thing is certain, however, that never in life have I been quite so tormented. A great respect for mathematics has been instilled within me, the subtler aspects of which, in my stupidity, I regarded until now as pure luxury.

In my relativity theory I set up a clock at every point in space, but in reality I find it difficult to provide even one clock in my room.

The truth of a theory can never be proven, for one never knows if future experience will contradict its conclusions.

Our defense is not in our armaments, nor in science, nor in going underground. Our defense is in law and order.

Organized people are just too lazy to go looking for what they want.

What the individual can do is to give a fine example, and to have the courage to uphold ethical values .. in a society of cynics.

The point is to develop the childlike inclination for play and the childlike desire for recognition and to guide the child over to important fields for society. Such a school demands from the teacher that he be a kind of artist in his province.