The characteristic differences between music and architecture are the same as those which subsist between time and space. Now time and space are such abstract ideas that they can be dealt with best through their corresponding correlatives in the natural world, for it is a fundamental theosophic tenet that nature everywhere abounds in such correspondences; that nature, in its myriad forms, is indeed the concrete presentment of abstract unities. The energy which everywhere animates form is a type of time within space; the mind working in and through the body is another expression of the same thing. Correspondingly, music is dynamic, subjective, mental, of one dimension; while architecture is static, objective, physical, of three dimensions; sustaining the same relation to music and the other arts as does the human body to the various organs which compose, and consciousnesses which animate it (it being the reservatory of these organs and the vehicle of these consciousnesses); and a work of architecture in like manner may and sometimes does include all of the other arts within itself. Sculpture accentuates and enriches, painting adorns, works of literature are stored within it, poetry and the drama awake its echoes, while music thrills to its uttermost recesses, like the very spirit of life tingling through the body's fibres. Such being the relation between them, the difference in the nature of the ideas bodied forth in music and in architecture becomes apparent. Music is interior, abstract, subjective, speaking directly to the soul in a simple and universal language whose meaning is made personal and particular in the breast of each listener: "Music alone of all the arts," says Balzac, "has power to make us live within ourselves." A work of architecture is the exact opposite of this: existing principally and primarily for the uses of the body, it is like the body a concrete organism, attaining to esthetic expression only in the reconciliation and fulfilment of many conflicting practical requirements. Music is pure beauty, the voice of the unfettered and perpetually vanishing soul of things; architecture is that soul imprisoned in a form, become subject to the law of causality, beaten upon by the elements, at war with gravity, the slave of man. One is the Ariel of the arts; the other, Caliban.