So even a stone can respond to a person's mind, and this teaches us that there is a great deal to explore in the mineral kingdom. This is not a discovery of today; it was known to the people of ancient times. We read in the Persian poems of Jelal-ud-din Rumi that God slept in the mineral kingdom, dreamed in the vegetable, became conscious in the animal, and realized Himself in the human being. But this one life is to be seen in a more pronounced form in human beings, in the intellect they show, in the work they do, in the magnetizing of the atmosphere, in the thought-power they exercise, in the influence of healing.