**All for the Use of Man.** Nevertheless, rocks and trees and beasts, are for the use of man, to be used by him in moderation and with wisdom. Man is at the head of the creations on earth. It is his duty to make proper use of them all. Whoever teaches that any part of the universe is not for the benefit of man, is in error. **Man's Conquest of Nature.** It is the simplest of present-day doctrines that the vastness of nature makes it impossible for man to comprehend more than the minutest part of it. Yet, in the true philosophy of life, nothing is more certain than that the greatest mystery of nature may at some time be understood. The great purpose of man's existence is a complete understanding of all the mysteries of nature. True, the understanding that will give him full mastery over nature will come little by little. In the end, man shall know all that he desires. Even in that happy day he shall not be able to change one law of nature; only by intelligent control may he apply nature's laws to desired ends. With this certainty man may go onward hopefully. Nature is inexhaustible and man shall not, in all the endless ages, explore it completely; he shall only in the eternal days become more conscious of its infinite majesty--thereby comes the everlasting joy of man. Great hope of conquest enables man to meet his daily tasks, with lifted head and fearless courage. Man knows that all his search shall be successful, if he only search with might and main and have patience to wait. **Miracles.** Man is of limited power; whatever he can not understand or duplicate may be called miraculous; and only in that sense can miracles be allowed. The miracles of the Savior were done only by superior knowledge. Nothing is unnatural. All that has been done, man may do as he increases in power. The conception of intelligence guiding the destinies of men, makes it possible that, in our behalf, wonderful things are often done, that transcend our understanding, but which are yet in full and complete harmony with the laws of nature. For ourselves we must discover all of nature that we can. In time of need, when our own knowledge does not suffice, the Master may give his help. Thus, after man has used his full knowledge and failed, the sick may be healed, the sorrowing, comforted, or wealth or poverty may come, provided we draw heavily enough upon the unseen forces about us. Help so obtained is not unnatural. A miracle is simply that which we can not understand, and at which we marvel.