I have firmly decided to bite the dust with a minimum of medical assistance when my time comes, and up to then to sin to my wicked heart's content.

... on principle, it is quite wrong to try founding a theory on observable magnitudes alone. In reality the very opposite happens. It is the theory which decides what we can observe.

The legs are the wheels of creativity.

Experience alone can decide on truth.

I was supposed to choose apractical profession, but this was simply unbearable to me.

Not until the creation and maintenance of decent conditions of life for all men are recognized and accepted as a common obligation of all men and all countries — not until then shall we, with a certain degree of justification, be able to speak of mankind as civilized.

We must dedicate our lives to drying up the source of war: ammunition factories.