If I have insisted so much on the course which criticism must take where politics and religion are concerned, it is because, where these burning matters are in question, it is most likely to go astray. I have wished, above all, to insist on the attitude which criticism should adopt towards things in general; on its right tone and temper of mind. But then comes another question as to the subject-matter which literary criticism should most seek. Here, in general, its course is determined for it by the idea which is the law of its being: the idea of a disinterested endeavor to learn and propagate the best that is known and thought in the world, and thus to establish a current of fresh and true ideas. By the very nature of things, as England is not all the world, much of the best that is known and thought in the world cannot be of English growth, must be foreign; by the nature of things, again, it is just this that we are least likely to know, while English thought is streaming in upon us from all sides, and takes excellent care that we shall not be ignorant of its existence. The English critic of literature, therefore, must dwell much on foreign thought, and with particular heed on any part of it, which, while significant and fruitful in itself, is for any reason specially likely to escape him. Again, judging is often spoken of as the critic's one business, and so in some sense it is; but the judgment which almost insensibly forms itself in a fair and clear mind, along with fresh knowledge, is the valuable one; and thus knowledge, and ever fresh knowledge, must be the critic's great concern for himself. And it is by communicating fresh knowledge, and letting his own judgment pass along with it,--but insensibly, and in the second place, not the first, as a sort of companion and clue, not as an abstract lawgiver,--that the critic will generally do most good to his readers. Sometimes, no doubt, for the sake of establishing an author's place in literature, and his relation to a central standard (and if this is not done, how are we to get at our _best in the world?_) criticism may have to deal with a subject-matter so familiar that fresh knowledge is out of the question, and then it must be all judgment; an enunciation and detailed application of principles. Here the great safeguard is never to let oneself become abstract, always to retain an intimate and lively consciousness of the truth of what one is saying, and, the moment this fails us, to be sure that something is wrong. Still under all circumstances, this mere judgment and application of principles is, in itself, not the most satisfactory work to the critic; like mathematics, it is tautological, and cannot well give us, like fresh learning, the sense of creative activity.