This impoverishment of the sensual implies, however, an immeasurable deepening. Human waking-consciousness is no longer a mere tension between body and environment. It is now life _in_ a self-contained light-world. The body moves _in_ the space that is seen. The depth-experience[5] is a mighty out-thrust _into the visible distance_ from a light-centre[6]--the point which we call “I.” “I” is a light-concept. From this point onward the life of an “I” becomes essentially a life in the sun, and night is akin to death. And out of it, too, there arises a new feeling of fear which absorbs all others within itself--_fear before the invisible_, fear of that which one hears or feels, suspects, or observes in its effects without seeing. Animals indeed experience fear in other forms, but man finds these forms puzzling, and even uneasiness in the presence of stillness to which primitive men and children are subject (and which they seek to dispel by noise and loud talking) is disappearing in the higher types of mankind. It is fear of the invisible that is the essence and hall-mark of human religiousness. Gods are surmised, imagined, envisaged light-actualities, and the idea of an “invisible” god is the highest expression of human transcendence. Where the bounds of the light-world are, there lies the beyond, and salvation is emancipation from the spell of the light-world and its facts. In precisely this resides the ineffable charm and the very real power of emancipation that music possesses for us men. For music is the only art whose means lie outside the light-world that has so long become coextensive with our total world, and music alone, therefore, can take us right out of this world, break up the steely tyranny of light, and let us fondly imagine that we are on the verge of reaching the soul’s final secret--an illusion due to the fact that our waking consciousness is now so dominated by one sense only, so thoroughly adapted to the eye-world, that it is incapable of forming, out of the impressions it receives, a world of the ear.[7] Man’s thought, then, is visual thought, our concepts are derived from vision, and the whole fabric of our logic is a light-world in the imagination.