In the second place, Spiritual Life is not something outside ourselves. The idea is not that Christ is in heaven and that we can stretch out some mysterious faculty and deal with Him there. This is the vague form in which many conceive the truth, but it is contrary to Christ's teaching and to the analogy of nature. Vegetable Life is not contained in a reservoir somewhere in the skies, and measured out spasmodically at certain seasons. The Life is _in_ every plant and tree, inside its own substance and tissue, and continues there until it dies. This localization of Life in the individual is precisely the point where Vitality differs from the other forces of nature, such as magnetism and electricity. Vitality has much in common with such forces as magnetism and electricity, but there is one inviolable distinction between them--that Life is permanently fixed and rooted in the organism. The doctrines of conservation and transformation of energy, that is to say, do not hold for Vitality. The electrician can demagnetize a bar of iron, that is, he can transform its energy of magnetism into something else--heat, or motion, or light--and then re-form these back into magnetism. For magnetism has no root, no individuality, no fixed indwelling. But the biologist cannot devitalize a plant or an animal and revivify it again.[50] Life is not one of the homeless forces which promiscuously inhabit space, or which can be gathered like electricity from the clouds and dissipated back again into space. Life is definite and resident; and Spiritual Life is not a visit from a force, but a resident tenant in the soul. This is, however, to formulate the statement of the third point, that Spiritual Life is not an ordinary form of energy or force. The analogy from Nature indorses this, but here Nature stops. It cannot say what Spiritual Life is. Indeed what natural Life is remains unknown, and the word Life still wanders through Science without a definition. Nature is silent, therefore, and must be as to Spiritual Life. But in the absence of natural light we fall back upon that complementary revelation which always shines, when truth is necessary and where Nature fails. We ask with Paul when this Life first visited him on the Damascus road, What is this? "Who art Thou, Lord?" And we hear, "I am Jesus."[51]