That gospel was fixed by the necessity that in Jefferson's time no one could have conceived public opinions that were not spontaneous and subjective. The democratic tradition is therefore always trying to see a world where people are exclusively concerned with affairs of which the causes and effects all operate within the region they inhabit. Never has democratic theory been able to conceive itself in the context of a wide and unpredictable environment. The mirror is concave. And although democrats recognize that they are in contact with external affairs, they see quite surely that every contact outside that self-contained group is a threat to democracy as originally conceived. That is a wise fear. If democracy is to be spontaneous, the interests of democracy must remain simple, intelligible, and easily managed. Conditions must approximate those of the isolated rural township if the supply of information is to be left to casual experience. The environment must be confined within the range of every man's direct and certain knowledge.
The democrat has understood what an analysis of public opinion seems to demonstrate: that in dealing with an unseen environment decisions "are manifestly settled at haphazard, which clearly they ought not to be." [Footnote: Aristotle, _Politics_, Bk. VII, Ch. IV.] So he has always tried in one way or another to minimize the importance of that unseen environment. He feared foreign trade because trade involves foreign connections; he distrusted manufactures because they produced big cities and collected crowds; if he had nevertheless to have manufactures, he wanted protection in the interest of self-sufficiency. When he could not find these conditions in the real world, he went passionately into the wilderness, and founded Utopian communities far from foreign contacts. His slogans reveal his prejudice. He is for Self-Government, Self-Determination, Independence. Not one of these ideas carries with it any notion of consent or community beyond the frontiers of the self-governing groups. The field of democratic action is a circumscribed area. Within protected boundaries the aim has been to achieve self-sufficiency and avoid entanglement. This rule is not confined to foreign policy, but it is plainly evident there, because life outside the national boundaries is more distinctly alien than any life within. And as history shows, democracies in their foreign policy have had generally to choose between splendid isolation and a diplomacy that violated their ideals. The most successful democracies, in fact, Switzerland, Denmark, Australia, New Zealand, and America until recently, have had no foreign policy in the European sense of that phrase. Even a rule like the Monroe Doctrine arose from the desire to supplement the two oceans by a glacis of states that were sufficiently republican to have no foreign policy.