...There are two worlds in the minds of men: the one is artificial, selfish, and personal, the other is real and universal; the one is limited, material, essentially of the earth, the other supposes a kind of larger cosmopolitanism, and has no geographical limits at all; it is as wide as humanity itself, and only bounded by the capacity for experience, insight, and sympathy in the mind and heart of man. A true man of the world, therefore, is not primarily of it, a true man of the world must know and understand the world; and in order to do so, he should be able at any time to get it into perspective...