Intellect is the knowledge of names and forms, their character and nature, gathered from the external world. It shows in an infant from birth, when he begins to be curious about all he sees; then, by storing in his mind the various forms and figures he sees, he recognizes them as an addition to his knowledge of variety. Man thus gathers the knowledge of numberless forms of the whole world in his mind and holds them; some of them stand out luminously and predominate over, and cover, others. He also retains those forms which interest him. The nature of forms is to overpower one another in proportion to their material concreteness. The more concrete they are, the more luminous they appear; so the intellectual person takes an interest in their variety and law of change, and as knowledge is the food of the soul, he at least becomes increasingly interested in the knowledge of names and forms, and calls that learning. This becomes his world, although it neither gives him a sense of unchanging comfort, nor does he thereby gain an everlasting peace.