These are the salient points of the three steps which Indian religious thought has taken in regard to God. We have seen that it began with the Personal, the extra-cosmic God. It went from the external to the internal cosmic body, God immanent in the universe, and ended in identifying the soul itself with that God, and making one Soul, a unit of all these various manifestations in the universe. This is the last word of the Vedas. It begins with dualism, goes through a qualified monism and ends in perfect monism. We know how very few in this world can come to the last, or even dare believe in it, and fewer still dare act according to it. Yet we know that therein lies the explanation of all ethics, of all morality and all spirituality in the universe. Why is it that every one says, "Do good to others?" Where is the explanation? Why is it that all great men have preached the brotherhood of mankind, and greater men the brotherhood of all lives? Because whether they were conscious of it or not, behind all that, through all their irrational and personal superstitions, was peering forth the eternal light of the Self denying all manifoldness, and asserting that the whole universe is but one.