There is a light within every soul. It only needs the clouds which hide it to dissolve, for it to beam forth. This is the light of revelation. It is like a lantern to us, it lights up every dark corner we wish to examine, and gives an answer to every question we would ask. This light can only shine where the heart is pure, and in order to purify the heart, the Sufi has a contemplative process suited to the evolution of each individual.