Anyone who imagines that all fruits ripen at the same time as the strawberries knows nothing about grapes.

Could we but rightly comprehend the mind of man, nothing would be impossible to us upon the earth.

Thoughts create a new heaven, a new firmament, a new source of energy, from which new arts flow.

Although Alchemy has now fallen into contempt, and is even considered a thing of the past, the physicain should not be influenced by such judgements.

Life is like music, it must be composed by ear, feeling and instinct, not by rule. Nevertheless one had better know the rules, for they sometimes guide in doubtful cases, though not often.

From time immemorial artistic insights have been revealed to artists in their sleep and in dreams, so that at all times they ardently desired them.

The universities do not teach all things ... so a doctor must seek out old wives, gypsies, sorcerers, wandering tribes, old robbers, and such outlaws and take lessons from them. A doctor must be a traveller . . . Knowledge is experience.