We cannot also say that the world has no ultimate basis at all, for the changing phases of the physical Nature and the moral urges of the inner spirit in man assert that God ought to be. Man is not merely a body, a mind or a spirit, but a curious mixture of all these in a manner not comprehensible to ordinary intelligence. The Katha-Upanishad says that the true enjoyer or the empirical agent of knowledge and action is a composite structure of the Atman, the mind and the senses, together. Life is not merely a process of swirling masses of matter, groups of molecules, aggregates of atoms or vortices of electrical forces, occasions for the study of psychology of even metaphysics, and an idealistic soaring into the empyrean of logical thought, mental phenomena or mere psychic experience. Not even an exclusively spiritualistic consideration or an occultist interpretation can explain the mystery of life which proves to be a superhuman work of the combination of certain characteristic elements of all these stages and strata of being at one and the same time.
Man is at once a physical embodiment, a mental phenomenon and a spiritual entity.
He has to appease not only the hunger of the body and the thirst of his vital forces, but has to pay equal, if not greater, attention to the demands of his psychic nature, his moral tendencies and spiritual aspirations. Life is a synthesis of the forces manifesting in different orders and in a graduated scale the evolutionary structure of Nature. As a body he is a creature of natural forces, subjected to the suffering and the mortality attending upon all composite structures in the physical world. He is one with inanimate matter when taken purely as a material structure. But man's tale does not end here.