to the national policy. Surrounded as it necessarily will be by an atmosphere of hostility, its character as a herd becomes hardened and invigorated, and it can endow its members with all the gifts of moral vigour and resistiveness a herd can give. Thus we may say, that in a country at war every citizen is exposed to the extremely powerful stimulation of herd instinct characteristic of that state. In the individual who follows in feeling the general body of his fellows, and in him who belongs to a dissentient minority, the reactions peculiar to the gregarious animal will be energetically manifested. Of such reactions, that which interests us particularly at the moment is the moulding of opinion in accordance with instinctive pressure, and we arrive at the conclusion that our citizen of the majority is no more—if no less—liable to the distortion of opinion than our citizen of the minority. Whence we conclude that in a country at war all opinion is necessarily more or less subject to prejudice, and that this liability to {217} bias is a herd mechanism, and owes its vigour to that potent instinct.
It is undoubtedly depressing to have to recognize this universality of prejudice and to have to abandon the opinion sometimes held that the characteristics of herd belief are limited to the judgments of the vulgar. The selectness of a minority in no way guarantees it against the fallacies of the mob. A minority sufficiently unpopular is, in a sense, a mob in which smallness is compensated for by density. The moral vigour and fortitude which unpopular minorities enjoy are evidences of herd instinct in vigorous action; the less admirable liability to prejudice being a part of the same instinctive process is a necessary accompaniment. We may lay it down, then, as fundamental that all opinion among the members of a nation at war is liable to prejudice, and when we remember with what vehemence such opinion is pronounced and with what fortitude it is defended we may regard as at least highly probable that such opinion always actually is prejudiced—rests, that is to say, on instinct rather than reason. Now, it is common knowledge that in the present state of society opinion in a given country is always divided as to