What is wanted is not the will to believe, but the wish to find out, which is its exact opposite. If it is admitted that a condition of rational doubt would be desirable, it becomes important to inquire how it comes about that there is so much irrational certainty in the world. A great deal of this is due to the inherent irrationality and credulity of average human nature. But this seed of intellectual original sin is nourished and fostered by other agencies, among which three play the chief part—namely, education, propaganda, and economic pressure. Let us consider these in turn. (1) _Education._—Elementary education, in all advanced countries, is in the hands of the State. Some of the things taught are known to be false by the officials who prescribe them, and many others are known to be false, or at any rate very doubtful, by every unprejudiced person. Take, for example, the teaching of history. Each nation aims only at self-glorification in the school text-books of history. When a man writes his autobiography he is expected to show a certain modesty; but when a nation writes its autobiography there is no limit to its boasting and vainglory. When I was young, school books taught that the French were wicked and the Germans virtuous; now they teach the opposite. In neither case is there the slightest regard for truth. German school books, dealing with the battle of Waterloo, represent Wellington as all but defeated when Blücher saved the situation; English books represent Blücher as having made very little difference. The writers of both the German and the English books know that they are not telling the truth. American school books used to be violently anti-British; since the War they have become equally pro-British, without aiming at truth in either case (see _The Freeman_, Feb. 15, 1922, p. 532). Both before and since, one of the chief purposes of education in the United States has been to turn the motley collection of immigrant children into “good Americans.” Apparently it has not occurred to any one that a “good American,” like a “good German” or a “good Japanese,” must be, _pro tanto_, a bad human being. A “good American” is a man or woman imbued with the belief that America is the finest country on earth, and ought always to be enthusiastically supported in any quarrel. It is just possible that these propositions are true; if so, a rational man will have no quarrel with them. But if they are true, they ought to be taught everywhere, not only in America. It is a suspicious circumstance that such propositions are never believed outside the particular country which they glorify. Meanwhile the whole machinery of the State, in all the different countries, is turned on to making defenceless children believe absurd propositions the effect of which is to make them willing to die in defence of sinister interests under the impression that they are fighting for truth and right. This is only one of countless ways in