The greatest cure for love is still that time honoured medicine - love returned.

Enduring habits I hate.... Yes, at the very bottom of my soul I feel grateful to all my misery and bouts of sickness and everything about me that is imperfect, because this sort of thing leaves me with a hundred backdoors through which I can escape from enduring habits.

A lack of the historical sense is the hereditary fault of all philosophers.

Without the errors involved in the assumptions of ethics, man would have remained an animal. Thus has he taken himself as something higher and imposed rigid laws upon himself.

For some natures, changing their opinions is just as much a requirement of cleanliness as changing their clothes: for others, however, it is merely a requirement of vanity.

Laughter means: taking a mischievous delight in someone else's uneasiness, but with a good conscience.

I call a lie: wanting not to see something one does see, wanting not to see something as one sees it... The most common lie is the lie one tells to oneself; lying to others is relatively the exception.