When we study life from the material standpoint we see there are four different stages: the mineral kingdom, the vegetable kingdom, the animal, and the human. And of these four domains it is said by a dervish, "God slept in the mineral kingdom; He dreamed in the vegetable kingdom, He woke in the animal, and He realized Himself in the human." And this gradual progression shows us that underlying it there is a sense of life which has expressed itself in every step towards the completed development of love.