Only one who devotes himself to a cause with his whole strength and soul can be a true master. For this reason mastery demands all of a person.

I want to go when I want. It is tasteless to prolong life artificially. I have done my share, it is time to go. I will do it elegantly.

Private capitalists inevitably control, directly or indirectly, the main sources of information. It is thus extremely difficult, and indeed in most cases quite impossible, for the individual citizen to come to objective conclusions and to make intelligent use of his political rights.

Quantum mechanics is certainly imposing. But an inner voice tells me that this is not yet the real thing. The theory says a lot, but does not bring us any closer to the secrets of the "Old One." I, at any rate, am convinced that He is not playing at dice.

Only strong characters can resist the temptation of superficial analysis.

I am content in my later years. I have kept my good humor and take neither myself nor the next person seriously.

Incompetence is the true crisis.