“Let me add to this that in every idea emanating from genius, or even in every serious human idea—born in the human brain—there always remains something—some sediment—which cannot be made over to others though one wrote volumes upon the ‘idea,’ and lectured upon it for five and thirty years. There is always a something, a remnant, which will never come out from under your shell, but will remain there with you, and you alone, for ever and ever, and you will die, perhaps, without having imparted what may be the very essence of your idea to a single living soul.
