It argued a special genius; he was clearly a case of that. The spark of fire, the point of light, sat somewhere in his inward vagueness as a lamp before a shrine twinkles in the dark perspective of a church; and while youth and early middle-age, while the stiff American breeze of example and opportunity were blowing upon it hard, had made the chamber of his brain a strange workshop of fortune. This establishment, mysterious and almost anonymous, the windows of which, at hours of highest pressure, never seemed, for starers and wonderers, perceptibly to glow, must in fact have been during certain years the scene of an unprecedented, a miraculous white-heat, the receipt for producing which it was practically felt that the master of the forge could not have communicated even with the best intentions.