"Knowledge for its own sake" -- that's the last snare of morality; with that one becomes completely entangled in it once more. The attraction of knowledge would be small if one did not have to overcome so much shame on the way. One takes an obscure and inexplicable thing more seriously than a clear and explicable one.... A matter that becomes clear ceases to concern us. The more abstract the truth is that you would teach, the more you have to seduce the senses to it. People who comprehend a thing to its very depths rarely stay faithful to it for ever. For they have brought its depths into the light of day: and in the depths there is always much that is unpleasant to see. Half-knowledge is more victorious than whole knowledge: it understands things as being more simple than they are and this renders its opinions more easily intelligible and more convincing.