When "the light of truth" appeared to Descartes, he immediately imprisoned his discovery within a logical formula: "Cogito, ergo sum." And the great … - Lev Shestov

"In so far as the soul is in the body it rests in deep sleep," says Plotinus (III,vi,6). For a century past Plotinus's doctrine has been attracting increasing attention from philosophers. New works on Plotinus are continually appearing, and each fresh examination is another hymn in his praise. p. 327

Spinoza taught, and his commandments were received as a new revelation. And no one noticed (men prefer not to notice) that Spinoza himself acted, both as man and philosopher, in the diametrically opposite way. He asked no questions which he did not need, and found no answers which did not concern him. p. 159

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