All things are poisons, for there is nothing without poisonous qualities. It is only the dose which makes a thing poison.

That which lives on reason lives against the spirit.

Many have said of Alchemy, that it is for the making of gold and silver. For me such is not the aim, but to consider only what virtue and power may lie in medicines.

Let no one who can be his own belong to another.

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

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

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.