“In the Hermetic view of the alchemists, the creation of the universe took place through meditation – the focusing of the light of the mind of God. ‘All things have come from the One Thing,’ says the Emerald Tablet, ‘through the meditation of One Mind.’ The source of the One Mind was embedded in Nature itself, in all created things, including human beings.”
Dennis William Hauck, in “Searching for the Cosmic Quintessence: How Alchemists Meditated in the Middle Ages and Renaissance”