There is a relation between sound and color. In reality they are one. They are two aspects of life. Life and light are one. Life is light and light is life, and so color is sound and sound color. Only, when sound is color it is most visible and least audible, and when color is sound it is most audible and least visible. One can find the unity of color and sound by studying and practicing the science of breath. When one hears something one's first tendency is to open one's eyes, to try to see the color of it. That is not the way to see it, although color is a language. The very life which is audible is visible also. But where? It is visible on the inner plane. The mistake is that man looks for it on the outer plane. When he hears music he wants to see the color before him. Every activity of the outer world is a kind of reaction; in other words a shadow of the activity which is behind it and which we do not see. And there is a difference in time. An activity which may have taken place twelve hours earlier is now visible in color on the outer plane. This is also the explanation of the effect of dreams on life. Of something that one has seen in a dream at night, one may perhaps see the effect in the morning, or even a week later. This shows that there is some activity which takes place behind the scenes. And it is reflected on the outer life according to how the activities of the outer life are directed.

This is the reason why a seer or mystic is very often able to know beforehand his own condition and the condition of others, what is coming or what has passed, or what is going on at a distance. For he knows the language of sound and color. And now the question is, on which plane does he know the language of sound and color? In what way does it manifest to him? One cannot restrict it by a certain law, yet at the same time it follows a certain law. And where does he see it? He sees it in his breath. (Hazrat Inayat Khan)