“Just as primitive man believed himself to stand face to face with demons and believed that could he but know their names he would become their master, so is contemporary man faced by this incomprehensible, which disorders his calculations. "If I can but grasp it, if I can but cognise it", so he thinks, "I can make it my servant.”

“Man's primary will to know struggles against the selfsatisfied formalism of empty learning which drugs man intothe illusory calm of fulfillment. It fights against empty intellectualism,against nihilism which has ceased wanting anything and thus has ceased wanting to know. It battles against mediocrity which never takes stock of itself and which confuses knowledge with the mere learning of facts and <> The only satisfaction which man derives from a radical commitment to knowledge is the hope of advancing the frontier of knowledge to a point beyond which he cannot advance except by transcending knowledge itself.”

“The limits of science have always been the source of bitter disappointment when people expected something from science that it was not able to provide. Take the following examples: a man without faith seeking to find in science a substitute for his faith on which to build his life; a man unsatisfied by philosophy seeking an all-embracing universal truth in science; a spiritually shallow person growing aware of his own futility in the course of engaging in the endless reflections imposed by science. In every one of these cases, science begins as an object of blind idolatry and ends up as an object of hatred andcontempt. Disenchantment inevitably follows upon these and similar misconceptions. One question remains: What value can science possibly have when its limitations have become so painfully clear?”

“The Socratic teacher turns his students away from himself and back onto themselves; he hides in paradoxes, makes himself inaccessible. The intimate relationship between student and teacher here is not one of submission, but of a contest for truth.”

“Metaphysical guilt is the lack of absolute solidarity with the human being as such--an indelible claim beyond morally meaningful duty. This solidarity is violated by my presence at a wrong or a crime. It is not enough that I cautiously risk my life to prevent it; if it happens, and I was there, and if I survive where the other is killed, I know from a voice within myself: I am guilty of being still alive.”

“But each one of us is guilty insofar as he remained inactive. The guilt of passivity is different. Impotence excuses; no moral law demands a spectacular death. Plato already deemed it a matter of course to go into hiding in desperate times of calamity, and to survive. But passivity knows itself morally guilty of every failure, every neglect to act whenever possible, to shield the imperiled, to relieve wrong, to countervail. Impotent submission always left a margin of activity which, though not without risk, could still be cautiously effective. Its anxious omission weighs upon the individual as moral guilt. Blindness for the misfortune of others, lack of imagination of the heart, inner differences toward the witnessed evil--that is moral guilt.”

“To decide to become a philosopher seemed as foolish to me as to decide to become a poet.”