The Ideal theory of Plato, therefore, teaches that, beyond this world of delusive appearances, this world of material objects, there is another world, invisible, eternal, and essentially true; that, though we cannot trust our senses for the correctness of the indications they yield, there are other impressions upon which we may fall back to aid us in coming to the truth, the reminiscences or recollections still abiding in the soul of the things it formerly knew, either in the realm of pure ideas, or in the states of former life through which it has passed. For Plato says that there are souls which, in periods of many thousand years, have successively transmigrated through bodies of various kinds. Of these various conditions they retain a recollection, more faintly or vividly, as the case may be. Ideas seeming to be implanted in the human mind, but certainly never communicated to us by the senses, are derived from those former states. If this recollection of ancient events and conditions were absolutely precise and correct, then man would have an innate means for determining the truth. But such reminiscences being, in their nature, imperfect and uncertain, we never can attain to absolute truth. With Plato, the Beautiful is the perfect image of the true. Love is the desire of the soul for Beauty, the attraction of like for like, the longing of the divinity within us for the divinity beyond us; and the Good, which is beauty, truth, justice, is God--God in his abstract state. [Sidenote: God is the sum of ideas.] [Sidenote: The nature of the world and of the gods.] [Sidenote: Triple constitution of the soul.] [Sidenote: Transmigration and future rewards and punishments.] [Sidenote: The physiology of Plato.]