But it is impossible to argue _a priori_ from the presence of one or even several of these factors to the existence of a nationality: they may have been there for ages and kindled no response. And it is impossible to argue from one case to another: precisely the same group of factors may produce nationality here, and there have no effect. Great Britain is a nation by geography and tradition, though important Keltic-speaking sections of the population in Wales and the Highlands do not understand the predominant English language. Ireland is an island smaller still and more compact, and is further unified by the almost complete predominance of the same English language, for the Keltic speech is incomparably less vigorous here than in Wales; yet the absence of common tradition combines with religious differences to divide the country into two nationalities, at present sharply distinct from one another and none the less hostile because their national psychology is strikingly the same. Germany is divided by religion in precisely the same way as Ireland, her common tradition is hardly stronger, and her geographical boundaries quite vague: yet she has built up her present concentrated national feeling in three generations. Italy has geography, language and traditions to bind her together; and yet a more vivid tradition is able to separate the Ticinese from his neighbors, and bind him to people of alien speech and religion beyond a great mountain range. The Armenian nationality does not occupy a continuous territory, but lives by language and religion. The Jews speak the language of the country where they sojourn, but religion and tradition hold them together. The agnostic Jew accepts not only the language but all the other customs of his adopted countrymen, but tradition by itself is too strong for him: he remains a Jew and cannot be assimilated.