Light has three principal aspects: the source of all light, the perpetual light, and light in the ordinary sense of the word. The first kind is the light which we perceive as intelligence, the next kind is the light which we see as the sun, and the third kind of light is what we use in our daily life, the light of a candle, an electric lamp, or any such light. Science today considers intelligence to be an outcome of this manifestation, gradually developing through a process of which man is the culmination, man who compared with all other living beings shows intelligence in its fullness. As we understand the word intelligence, it does not convey to us the meaning, "the source of light", except in a very limited form; intelligence in its original condition is something quite different from what we ordinarily understand by that word.