“Genius is the ability to leave entirely out of sight our own interest, our willing, and our aims, and consequently to discard entirely our own personality for a time, in order to remain pure knowing subject, the clear eye of the world; and this not merely for moments, but with the necessary continuity and conscious thought to enable us to repeat by deliberate art what has been apprehended and "what in wavering apparition gleams fix in its place with thoughts that stand for ever!”