this propensity for appearance, for simplification, for a disguise, for a cloak, in short, for an outside for every outside is a cloak there operates the sublime tendency of the man of knowledge, which takes, and on taking things profoundly, variously, and thoroughly; as a kind of cruelty of the intellectual conscience and taste, which every courageous thinker will acknowledge in himself, provided, as it ought to be, that he has sharpened and hardened his eye sufficiently long for introspection, and is accustomed to severe discipline and even severe words.