Finally consider that even the seeker after knowledge forces his spirit to recognize things against the inclination of the spirit, and often enough also against the wishes of his heart - by way of saying No where he would like to say Yes, love, and adore - and thus acts as an artist and transfigurer of cruelty. Indeed, any insistence on profundity and thoroughness is a violation, a desire to hurt the basic will of the spirit which unceasingly strives for the apparent and superficial - in all desire to know there is a drop of cruelty.
Nietzsche, Beyond Good and Evil, Our Virtues (229, last paragraph)