When a contradiction is impossible to resolve except by a lie, then we know that it is really a door.

Even if our efforts of attention seem for years to be producing no result, one day a light that is in exact proportion to them will flood the soul.

Workers need poetry more than bread. They need that their life should be a poem. They need some light from eternity. Religion alone can be the source of such poetry.

Evil is license, and that is why it is monotonous: everything has to be drawn from ourselves. One is condemned to false infinity. That is hell itself.

Oppression that is clearly inexorable and invincible does not give rise to revolt but to submission.

You could not be born at a better period than the present, when we have lost everything.

One could count on one's fingers the number of scientists throughout the world with a general idea of the history and development of their particular science: there is none who is really competent as regards sciences other than his own. As science forms an indivisible whole, one may say that there are no longer, strictly speaking, scientists, but only drudges doing scientific work.