We must expect to find this denied. Besides a proof from Revelation, this is an argument from experience. And yet we shall still be told that this Spiritual Life is a force. But let it be remembered what this means in Science, it means the heresy of confounding Force with Vitality. We must also expect to be told that this Spiritual Life is simply a development of ordinary Life--just as Dr. Bastian tells us that natural Life is formed according to the same laws which determine the more simple chemical combinations. But remember what this means in Science. It is the heresy of Spontaneous Generation, a heresy so thoroughly discredited now that scarcely an authority in Europe will lend his name to it. Who art Thou, Lord? Unless we are to be allowed to hold Spontaneous Generation there is no alternative: Life can only come from Life: "I am Jesus." A hundred other questions now rush into the mind about this Life: How does it come? Why does it come? How is it manifested? What faculty does it employ? Where does it reside? Is it communicable? What are its conditions? One or two of these questions may be vaguely answered, the rest bring us face to face with mystery. Let it not be thought that the scientific treatment of a Spiritual subject has reduced religion to a problem of physics, or demonstrated God by the laws of biology. A religion without mystery is an absurdity. Even Science has its mysteries, none more inscrutable than around this Science of Life. It taught us sooner or later to expect mystery, and now we enter its domain. Let it be carefully marked, however, that the cloud does not fall and cover us till we have ascertained the most momentous truth of Religion--that Christ is in the Christian.