What makes old age hard to bear is not the failing of one's faculties, mental and physical, but the burden of one's memories.

The inclination to digress is human. But the dramatist must avoid it even more strenuously than the saint must avoid sin, for while sin may be venial, digression is mortal.

We learn resignation not by our own suffering, but by the suffering of others.

I can imagine no more comfortable frame of mind for the conduct of life than a humorous resignation.

Throw yourself into the hurly-burly of life. It doesn't matter how many mistakes you make, what unhappiness you have to undergo. It is all your material ... Don't wait for experience to come to you; go out after experience. Experience is your material.

The secret of play-writing can be given in two maxims: stick to the point, and, whenever you can, cut.

Sentimentality is the only sentiment that rubs you the wrong way.