Egoism you say? There is nothing more universal than the individual, for what is the property of each is the property of all. Each man is worth more than the whole of humanity, nor will it do to sacrifice each to all save in so far as all sacrifice themselves to each. That which we call egoism is the principle of psychic gravity, the necessary postulate. "Love thy neighbor as thyself," we are told, the presupposition being that each man loves himself; and it is not said "Love thyself." And nevertheless, we do not know how to love ourselves.

The Tragic Sense of Life (1913) - III : The Hunger of Immortality