"This spirit, coming from God, is also the cause of the “greenness,” the benedicta viriditas, much praised by the alchemists. Mylius says of it: “God has breathed into created things a kind of germination, which is the viridescence.” In Hildegard of Bingen's Hymn to the Holy Ghost, which begins “0 ignis Spiritus paraclite,” we read: “From you the clouds rain down, the heavens move, the stones have their moisture, the waters give forth streams, and the earth sweats out greenness”"

- ~Carl Jung, CW 11, Para 151