The next stage is called 'Jatanada,' a word which means 'the light.' It is the different degrees of that light and their comparison with one another which gives rise to the various colors. Colors are only the different shadows of light. Compared with one another they are colors. But in reality the light constitutes all color. This is shown by the light of the sun, which has no particular color of its own. But the light of which plants partake, they manifest in the colors of their flowers. These colors seem to be the colors of flowers, vegetables and leaves, whereas in reality they are the colors of the sun. Moreover, in the case of souls also, we may realize that the manifestation of such a variety among them is also an illusion. One forgets that all the various and endless faces and forms of human beings belong to one Spirit, and are the manifestations of that one Spirit. When one begins to understand the theory of color and sound, one can begin to understand that also.