Keep going; never stop; sit tight; Read something luminous at night.

The product of the scientific imagination is a new vision of relations - like that of artistic imagination.

One didn't really believe till one saw it demonstrated that giving oneself up completely to art, to emotion, to enjoyment, without planning for the future or counting the cost, produced dreadful disabilities and bankruptcies later.

I have learned to read the papers calmly and not to hate the fools I read about.

The great mistake about Europe is taking the countries seriously and letting them quarrel and drop bombs on one another.

The Jew lends himself easily to Communism because it enables him to devote himself to a high cause, involving all of humanity, characteristics which are natural to him as a Jew.

The only thing that we can really make is our work, and deliberate work of the mind, imagination and hand, done, as Nietzsche said, ‘notwithstanding,’ in the long run remakes the world.