But while this is true, there is a point at which science always stops. It uses correspondences to explain the past; it never struck science to use them to try to forecast the future; and naturally, for along the scientific line such forecast of the future is practically impossible; science works by induction, not by deduction, gathers together innumerable facts, arranges them, classifies them, compares them, and out of all that gathering, arrangement, and comparison it tries to find by a process of logical induction some great principle in which all the classified facts find their explanation, and thus a law is discovered. But further than that induction cannot take us. It cannot take us beyond the facts that are observed. Nothing in the facts observed presages that which is to come; and it is only when you use the other logical method—not that of induction, which is the scientific plan, but that of deduction, which we find in the philosophies of the past, which we find in the one perfect science, the science of mathematics, the Platonic method as against that of Aristotle—it is only then that we find it possible by a process of deduction not only to explain the past, but also to draw out a chart of the future. And it is by using that noble form of logical thought that Occult Science has ever been able to presage the future from the principles that it finds existing in the universe, unfolding stage by stage. I want, if I can, now to show you how that method may be applied; how, knowing the nature of man, we may be able from that to indicate not only the past through which he has come from far beyond the range of what is recognised as history, but also to throw a light along the road that mankind will travel in the future, seeing the heights up which he will climb, realising the powers yet hidden within the partially unfolded and evolved man.