To be content with little is difficult; to be content with much, impossible.

Oh happy pessimists! What a joy it is to them to be able to prove again and again that there is no joy.

Nothing is so often and so irrevocably missed as the opportunity which crops up daily.

Only the thinking man lives his life, the thoughtless man's life passes him by.

Do not fear the ones who argue, but rather those who are evasive.

There are more truths in a good book than its author meant to put in it.

Never strive, O artist, to create what you are not irresistibly impelled to create!