I found a copy of this book at The Dusty Bookshelf here in Lawrence, KS today. It's reputation proceeds it but I would have purchased it on the strength of the epigram alone.
“When someone is honestly 55% right, that’s very good and there’s no use wrangling. And if someone is 60% right, it’s wonderful, it’s great luck, and let him thank God. But what’s to be said about 75% right? Wise people say this is suspicious. Well, and what about 100% right? Whoever says he’s 100% right is a fanatic, a thug, and the worst kind of rascal."
—An old Jew of Galicia
"It was only toward the middle of the twentieth century that the inhabitants of many European countries came, in general unpleasantly, to the realization that their fate could be influenced directly by intricate and abstruse books of philosophy. Their bread, their work, their private lives began to depend on this or that decision in disputes on principles to which, until then, they had never paid any attention. In their eyes, the philosopher had always been a sort of dreamer whose divagations had no effect on reality. The average human being, even if he had once been exposed to it, wrote philosophy off as utterly impractical and useless. Therefore the great intellectual work of the Marxists could easily pass as just one more variation on a sterile pastime. Only a few individuals understood the causes and probable consequences of this general indifference.
—Czeslaw Milosz, The Captive Mind, 1953