One horse-laugh is worth ten-thousand syllogisms.

As for Lindbergh, another eminent servant of science, all he proved by his gaudy flight across the Atlantic was that God takes care of those who have been so fortunate as to come into the world foolish. Expressing skepticism that adventure does not necessarily contribute to scientific knowledge.

As if paralyzed by the national fear of ideas, the democratic distrust of whatever strikes beneath the prevailing platitudes, it evades all resolute and honest dealing with what, after all, must be every healthy literature's elementary materials.

There is no record in human history of a happy philosopher: they exist only in romantic legend.

My belief in free speech is so profound that I am seldom tempted to deny it to the other fellow. Nor do I make any effort to differentiate between the other fellow right and that other fellow wrong, for I am convinced that free speech is worth nothing unless it includes a full franchise to be foolish and even...malicious.

It is common to assume that human progress affects everyone - that even the dullest man, in these bright days, knows more than any man of, say, the Eighteenth Century, and is far more civilized. This assumption is quite erroneous. . . . The great masses of men, even in this inspired republic, are precisely where the mob was at the dawn of history. They are ignorant, they are dishonest, they are cowardly, they are ignoble. They know little if anything that is worth knowing, and there is not the slightest sign of a natural desire among them to increase their knowledge.

It was morality that burned the books of the ancient sages, and morality that halted the free inquiry of the Golden Age and substituted for it the credulous imbecility of the Age of Faith. It was a fixed moral code and a fixed theology which robbed the human race of a thousand years by wasting them upon alchemy, heretic-burning , witchcraft and sacerdotalism.