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favor of action that is consonant with the enlightened self-interest of those who make it and those to whom it is addressed, and non-rational propaganda that is not consonant with anybody’s enlightened self-interest, but is dictated by, and appeals to, passion. Where the actions of individuals are concerned there are motives more exalted than enlightened self-interest, but where collective action has to be taken in the field of politics and economics, enlightened self-interest is probably the highest of effective motives. If politicians and their constituents always acted to promote their own or their country’slong-range self-interest, this world would be an earthly paradise. As it is, they often act against their own interests, merely to gratify their least creditable passions; the world, in consequence, is a place of misery. Propaganda in favor of action that is consonant with enlightened self-interest appeals to reason by means of logical arguments based upon the best available evidence fully and honestly set forth. Propaganda in favor of action dictated by the impulses that are below self-interest offers false, garbled or incomplete evidence, avoids logical argument and seeks to influence its victims by the mere repetition of catchwords, by the furious denunciation of foreign or domestic scapegoats, and by cunningly associating the lowest passions with the highest ideals, so that atrocities come to be perpetrated in the name of God and the most cynical kind of
Realpolitik
is treated as a matter of religious principle and patriotic duty.
    In John Dewey’s words, “a renewal of faith in common human nature, in its potentialities in general, and in its power in particular to respond to reason and truth, is a surer bulwark against totalitarianism than a demonstration of material success or a devout worship of special legal and political forms.” The power to respond to reason and truth exists in all of us. But so, unfortunately, does the tendency to respond to unreason and falsehood—particularly in those cases where the falsehood evokes some enjoyable emotion, or where the appeal to unreason strikes some answering chord in the primitive, subhuman depths of our being. In certain fields of activity men have learned to respond to reason and truth pretty consistently. The authors of learned articles do not appeal to the passions of their fellow scientists and technologists. They set forth what, to the best of their knowledge, is the truth about some particular aspect of reality, they use reason to explain the facts theyhave observed and they support their point of view with arguments that appeal to reason in other people. All this is fairly easy in the fields of physical science and technology. It is much more difficult in the fields of politics and religion and ethics. Here the relevant facts often elude us. As for the meaning of the facts, that of course depends upon the particular system of ideas, in terms of which you choose to interpret them. And these are not the only difficulties that confront the rational truth-seeker. In public and in private life, it often happens that there is simply no time to collect the relevant facts or to weigh their significance. We are forced to act on insufficient evidence and by a light considerably less steady than that of logic. With the best will in the world, we cannot always be completely truthful or consistently rational. All that is in our power is to be as truthful and rational as circumstances permit us to be, and to respond as well as we can to the limited truth and imperfect reasonings offered for our consideration by others.
    “If a nation expects to be ignorant and free,” said Jefferson, “it expects what never was and never will be…. The people cannot be safe without information. Where the press is free, and every man able to read, all is safe.” Across the Atlantic another passionate believer in reason was thinking about the same time, in almost precisely similar