That Carlyle saw this, and saw it so clearly, is no doubt partly due to a cause, of which more must be said directly; to his craving for ideas. [Footnote: See p. xciv.] But it was in part owing to his hearty acceptance of the historical method. Both as critic and as historian, he knew--at that time, no man so well--that each nation has its own genius; and justly pronounced the conduct of that nation which "isolates itself from foreign influence, regards its own modes as so many laws of nature, and rejects all that is different as unworthy even of examination", to be "pedantry". [Footnote: _Miscellanies_, i. 37, 38.] This was the first, and perhaps the most fruitful consequence that he drew from the application of historical ideas to literature. They enlarged his field of comparison; and, by so doing, they gave both width and precision to his definition of criticism. But there is another--and a more usual, if a narrower--sense of the historical method; and here, too, Carlyle was a pioneer. He was among the first in our country to grasp the importance of studying the literature of a nation, as a whole, and from its earliest monuments, its mythological and heroic legends, downwards to the present. The year 1831--a turning-point in the mental history of Carlyle, for it was also the year in which _Sartor Resartus_ took shape "among the mountain solitudes"--was largely devoted to Essays on the history of German literature, of which one, that on the _Nibelungenlied_, is specially memorable. And some ten years later (1840) he again took up the theme in the first of his lectures on Heroes, which still remains the most enlightening, because the most poetic, account of the primitive Norse faith, or rather successive layers of faith, in our language. [Footnote: See _Lectures on Heroes_, p. 20; compare _Corpus Poeticum Borealt_, i. p. ci. ] But what mainly concerns us here is that Carlyle, in this matter as in others, had clearly realized and as clearly defines the goal which the student, in this case the student of literary history, should set before his eyes.