"Initiating knowledge is not that of objects which we can perceive with our senses. It is revealed to whoever is able to look into himself. Turn away from the glitter of objects; descend into the inner darkness where your spirit will be face to face with itself." "(The Priestess, the revealer of the mysteries, the holder of the keys of the Great Work.) The first matter of the wise; the initial enigma which is for the operator to solve before approaching the great master. This mysterious matter is everywhere, it can be obtained at a low price, but only the Children of the Art succeed in distinguishing it. Without it all chemical actions remain useless." "(The Priestess, Isis Mother of the Initiated.) The knowledge of initiation which one must be able to find for oneself. Isis only entrusts the key to mysteries to her sons, to die 'Children of the Wisdom' worthy of knowing her secrets."
- Tarot Of The Magicians by Oswald Wirth