The man is distinguished from the youth by the fact that he takes the world as it is, instead of everywhere fancying it amiss and wanting to improve it, i. e. model it after his ideal; in him the view that one must deal with the world according to his interest, not according to his ideals, becomes confirmed.
So long as one knows himself only as spirit, and feels that all the value of his existence consists in being spirit (it becomes easy for the youth to give his life, the "bodily life," for a nothing, for the silliest point of honor), so long it is only thoughts that one has, ideas that he hopes to be able to realize some day when he has found a sphere of action; thus one has meanwhile only ideals, unexecuted ideas or thoughts.
Not till one has fallen in love with his corporeal self, and takes a pleasure in himself as a living flesh-and-blood person,—but it is in mature years, in the man, that we find it so,—not till then has one a personal or egoistic interest, i. e. an interest not only of our spirit, for instance, but of total satisfaction, satisfaction of the whole chap, a selfish interest. Just compare a man with a youth, and see if he will not appear to you harder, less magnanimous, more selfish. Is he therefore worse? No, you say; he has only become more definite, or, as you also call it, more "practical." But the main point is this, that he makes himself more the centre than does the youth, who is infatuated about other things, e. g. God, fatherland, and so on.
Therefore the man shows a second self-discovery. The youth found himself as spirit and lost himself again in the general spirit, the complete, holy spirit, Man, mankind,—in short, all ideals; the man finds himself as embodied spirit.
Boys had only unintellectual interests (i. e. interests devoid of thoughts and ideas), youths only intellectual ones; the man has bodily, personal, egoistic interests.
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, such as 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.