Promise is the capacity for letting people down.

Longevity is the revenge of talent upon genius.

There is immunity in reading, immunity in formal society, in office routine, in the company of old friends and in the giving of officious help to strangers, but there is no sanctuary in one bed from the memory of another. The past with its anguish will break through every defense-line of custom and habit; we must sleep and therefore we must dream.

The dread of loneliness is greater than the fear of bondage, so we get married.

How many books did Renoir write on how to paint?

The one way to get thin is to re-establish a purpose in life.

It is significant comment on the victory of science over magic that were someone to say ‘if I put this pill in your beer it will explode,’ we might believe them; but were they to cry ‘if I pronounce this spell over your beer it will go flat,’ we should remain incredulous and Paracelsus, the Alchemists, Aleister Crowley and all the Magi have lived in vain. Yet when I read science I turn magical; when I study magic, scientific.