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.

The right dose differentiates a poison from a remedy

The book of Nature is that which the physician must read; and to do so he must walk over the leaves.

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.

A little bit of beer is divine medicine.

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.

Thoughts give birth to a creative force that is neither elemental nor sidereal. Thoughts create a new heaven, a new firmament, a new source of energy, from which new arts flow. When a man undertakes to create something, he establishes a new heaven.