For whence did Dante take the materials for his hell but from this our actual world? And yet he made a very proper hell of it.

Physics is unable to stand on its own feet, but needs a metaphysics on which to support itself, whatever fine airs it may assume towards the latter.

I have not yet spoken my last word about women. I believe that if a woman succeeds in withdrawing from the mass, or rather raising herself from above the mass, she grows ceaselessly and more than a man.

Where there is no love, a person's faithfulness to the marriage bond is probably against nature.

The greatest wisdom is to make the enjoyment of the present the supreme object of life; because that is the only reality, all else being merely the play of thought. On the other hand, such a course might just as well be called the greatest folly: for that which in the next moment exists no more, and vanishes utterly, like a dream, can never be worth a serious effort.

Truth that is naked is the most beautiful, and the simpler its expression the deeper is the impression it makes.

As the biggest library if it is in disorder is not as useful as a small but well-arranged one, so you may accumulate a vast amount of knowledge but it will be of far less value than a much smaller amount if you have not thought it over for yourself.