Very young children eat their books, literally devouring their contents. This is one reason for the scarcity of first editions of Alice in Wonderland and other favorites of the nursery.
Light is undiminishable, eternal and omni-present. In every religion that existed these qualities have been recognized as divine. So that we are forced to the conclusion that light, actual sensible light, is indeed the direct vehicle of divinity: it is the consciousness of God.