Thus, even in the universe of thought we find unity, and at last, when we get to the Self, we know that that Self can only be One. Beyond the vibrations of matter in its gross and subtle aspects, beyond motion there is but One. Even in manifested motion there is only unity. These facts can no more be denied. Modern physics also has demonstrated that the sum total of the energies in the universe is the same throughout. It has also been proved that this sum total of energy exists in two forms. It becomes potential, toned down, and calmed, and next it comes out manifested as all these various forces; again it goes back to the quiet state, and again it manifests. Thus it goes on evolving and involving through eternity. The control of this Prana, as before stated, is what is called Pranayama.