Now it is impossible for any man to note the workings of the will to power save as it is manifested in his own instincts and thoughts, and therefore Nietzsche, in his later books, urges that every man should be willing, at all times, to pit his own feelings against the laws laid down by the majority. A man should steer clear of rash generalization from his own experience, but he should be doubly careful to steer clear of the generalizations of others. The greatest of all dangers lies in subscribing to a thesis without being certain of its truth. "This not-wishing-to-see what one sees ... is a primary requisite for membership in a party, in any sense whatsoever. Therefore, the party man becomes a liar by necessity." The proper attitude for a human being, indeed, is chronic dissent and skepticism. "Zarathustra is a skeptic.... Convictions are prisons.... The freedom from every kind of permanent conviction, the ability to search freely, belong to strength.... The need of a belief, of something that is unconditioned is a sign of weakness. The man of belief is necessarily a dependent man.... His instinct gives the highest honor to self-abnegation. He does not belong to himself, but to the author of the idea he believes."[7] It is only by skepticism, argues Nietzsche, that we can hope to make any progress. If all men accepted without question, the _dicta_ of some one supreme sage, it is plain that there could be no further increase of knowledge. It is only by constant turmoil and conflict and exchange of views that the minute granules of truth can be separated from the vast muck heap of superstition and error. Fixed truths, in the long run, are probably more dangerous to intelligence than falsehoods.[8] This argument, I take it, scarcely needs greater elucidation. Every intelligent man knows that if there had been no brave agnostics to defy the wrath of the church in the middle ages, the whole of Christendom would still wallow in the unspeakably foul morass of ignorance which had its center, during that black time, in an infallible sovereign of sovereigns. Authority, at all times and everywhere, means sloth and degeneration. It is only doubt that creates. It is only the minority that counts.