Poison is in everything, and no thing is without poison. The dosage makes it either a poison or a remedy.

Then God sends us such a messenger who appears to us in spirit, warns us, consoles us, teaches us, and brings us His good tidings.

The physician must give heed to the region in which the patient lives, that is to say, to its type and peculiarities.

The highest degree of a medicine is Love.

This is alchemy, and this is the office of Vulcan; he is the apothecary and chemist of the medicine.

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.

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