Alchemists understood this. When they said that light emerged from darkness they were referring implicitly to light as the fruit of the immense work that takes place in darkness. Bees too work in darkness, because they have a light of their own. It is possible to work in darkness, for in reality there is no such thing as darkness. The night is lit by a dazzling light, but, as it is an astral light, we cannot see it. The darkness of some is light to others; darkness and light coexist.
