What concerns me alone I only think, what concerns my friends I tell them, what can be of interest to only a limited public I write, and what the world ought to know is printed...

We often have need of a profound philosophy to restore to our feelings their original state of innocence, to find our way out of the rubble of things alien to …

Astronomy is perhaps the science whose discoveries owe least to chance, in which human understanding appears in its whole magnitude, and through which man can …

If an angel were ever to tell us anything of his philosophy I believe many propositions would sound like 2 times 2 equals 13.

Not a hundredth part of the thoughts in my head have ever been or ever will be spoken or written - as long as I keep my senses, at least.

If one has no heart, one cannot write for the masses.

A playwright ... is ... the litmus paper of the arts. He's got to be, because if he isn't working on the same wave length as the audience, no one would know wh…