Looking thus, then, on the problem of the life that exists in the atom, we find that in order to understand it, we must develop the pure intellect in man; but to understand the life that clothes itself in organic forms, to unravel the secrets which will explain to us why one is formed thus and another thus, the next great aspect of the Self must be developed within us--that of the all-pervading life of Vishnu, that sustains the world as the mighty supporter of everything, the basis, the foundation of the whole. There alone is unifying energy and there the root from which all divisions have arisen; only as we realise this aspect of unifying energy in the Self will the secrets of organised forms in nature unravel themselves before our eyes. This work is that of the Sixth Root-race, and those who would ante-date their evolution must develop Sixth-race powers in themselves by Yoga. Remains one mightier problem, subtlest and most difficult of all, that of the life of the human spirit, of man evolving into God. The mysteries of that life may only be understood when the human Self, which comes forth from the Father of all--from the mighty One who is sometimes the Destroyer, sometimes the Creator, but always the Regenerator, the name that includes them both, Mahâdeva, the mighty God who is Sat, Existence--has developed the aspect of Sat, of pure Existence, thus becoming the triple Unity, a Logos, an Íshvara. That is the work of the Seventh Root-race, and when that is accomplished, then only will the final problems of the human spirit lie open before our gaze. The scientific man of antiquity, then, began by that self-attention, unfolding in himself one by one all those potentialities under a suitable Guru, passing from step to step till he reached the highest, and ever worshipping the Mahâguru, the Guru of the universe. Having unfolded his highest powers, he began to study life, life in its outpouring, not life in its manifold and veiled manifestations in the lower worlds. Hence the lofty point at which he started, no less than the arising of Íshvara enveloped in Mâyâ.