The sun is light, the light which always is light; clouds may cover it, but they do not really cover the sun, they only cover the sun from our eyes. When a person has no faith, it does not mean that in the depth of his being there is no faith. There is faith, but that sun is covered by clouds. When the heart is exposed to the things of the world, there are always doubts rising from the earth, and they will cover the heart.