From this dark water all heat is absorbed so that its spirit may be freed. That at the top of the four is the quintessence. It is made of the four and yet has its being before nature and is not in nature. There is but one vessel having the nature to contain what is beyond nature. Wash away all impurities.
All nature comes from polarity.
These are the opposite extremes of the One. The two-headed eagle looks in two directions but is of one body. That which separates and fixes is of the one vessel. Our Stone is of Moses, Jesus and Mohammed and contains no duality. To arrive at the quintessence find the unnamed substance.