The Bowl of Saki Commentary

Now spirit, which is the real existing substance, does not act like the material things, and yet its behavior is reflected in the behavior of all forms of matter. The change from spirit to matter is a process of congealing; in other words, it is a freezing or cooling effect which causes the vibrations to take on a coarser but hardier form. Nevertheless, as soon as they take on that form they are no longer receptive to the more attenuated pulsations of the spirit.

This play and interplay of the spirit sustains the whole universe, and everything, even the thoughts of humanity, and memory, is dependent upon it. Without it nothing would adhere to anything else. Spirit within matter holds particles together and spirit within mind holds thoughts together. That is why in concentration the thought must be held with feeling. By that both matter and mind are spiritualized and God is perceived in God's Creation.