For one country is different from another; its earth is different, as are its stones, wines, bread, meat, and everything that grows and thrives in a specific region.

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.

All arts lie in man, though not all are apparent. Awakening brings them out. To be taught is nothing; everything is in man waiting to be awakened.

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.

But is not He who created it for the sake of the sick body more than the remedy? And is not He who cures the soul, which is more than the body, greater?

Medicine rests upon four pillars - philosophy, astronomy, alchemy, and ethics.

Women's regular bleeding engenders phantoms.