"If the child has not an object that it can occupy itself with, it feels ennui; for it does not yet know how to occupy itself with itself. The youth, on the contrary, throws the object aside, because for him thoughts arose out of the object; he occupies himself with his thoughts, his dreams, occupies himself intellectually, or "his mind is occupied."

The young man includes everything not intellectual under the contemptuous name of "externalities." If he nevertheless sticks to the most trivial externalities (e.g. the customs of students' clubs and other formalities), it is because, and when, he discovers mind in them, i.e. when they are symbols to him.

As I find myself back of things, and that as mind, so I must later find myself also back of thoughts -- to wit, as their creator and owner. In the time of spirits thoughts grew till they overtopped my head, whose offspring they yet were; they hovered about me and convulsed me like fever-phantasies -- an awful power. The thoughts had become corporeal on their own account, were ghosts, e. g. God, Emperor, Pope, Fatherland, etc. If I destroy their corporeity, then I take them back into mine, and say: "I alone am corporeal." And now I take the world as what it is to me, as mine, as my property; I refer all to myself.

If as spirit I had thrust away the world in the deepest contempt, so as owner I thrust spirits or ideas away into their "vanity." They have no longer any power over me, as no "earthly might" has power over the spirit.

The child was realistic, taken up with the things of this world, till little by little he succeeded in getting at what was back of these very things; the youth was idealistic, inspired by thoughts, till he worked his way up to where he became the man, the egoistic man, who deals with things and thoughts according to his heart's pleasure, and sets his personal interest above everything. Finally, the old man? When I become one, there will still be time enough to speak of that..."

Max Stirner, The Ego And Its Own