Suppose Euripides is right, and that indeed no one can be sure whether life is not death and death life; can this truth ever become certain? If all m… - Lev Shestov

One may say with some certainty that Pascal would have remained the Pascal of the Provinciales had it not been for the abyss. So long as a man feels the solid earth beneath his feet, he will not risk defying reason and morality. Only exceptional conditions of being can free us from the immaterial and eternal truths which rule the world. Only a "madman" declares war on this rule. Remember the "experience" of our contemporary Nietzsche who begged the gods for "madness", since he had to kill the law, or, to use his own words, to announce to Rome and the world that he was "beyond good and evil". p. 305

How alarming to men, even today, is Protagoras's doctrine that man is the measure of all things! And what efforts human thought makes to kill Protagoras and his teaching! They have stopped at nothing, not even at direct calumny - even men like Socrates, Plato, and Aristotle who loved uprightness and honesty with their whole souls and honestly desired only to serve the truth. They were afraid that if they let Protagoras prevail, they would become misologoi, despisers of reason, that they would commit spiritual suicide. They were afraid: that is the point. But there was no reason to be afraid. p. 166

De omnibus dubitandum, taught Descartes - doubt all things. Easily said - but how to do it? Try, for example to doubt that the laws of nature are always binding: one day a case may occur where nature makes an exception for some stone, and exempts it from the law of gravity. But how to find this stone, if one has the courage to admit such a possibility, even if one knew definitely that such a stone existed? p. 215