A pessimist is somebody who complains about the noise when opportunity knocks.

Whenever people agree with me I always feel I must be wrong.

Science can never grapple with the irrational. That is why it has no future before it, in this world.

Murder is always a mistake. One should never do anything that one cannot talk about after dinner.

Love is fed by the imagination, by which we become wiser than we know, better than we feel, nobler than we are: by which we can see life as a whole, by which and by which alone we can understand others in their real and their ideal relation. Only what is fine, and finely conceived can feed love. But anything will feed hate.

I am not in favour of this modern mania for turning bad people into good people at a moment's notice.

It is only about things that do not interest one that one can give a really unbiased opinion, which is no doubt the reason why an unbiased opinion is always absolutely valueless.