Thus doing, he shall perform the true office of friendship. He will introduce his pupil into the society which he himself prizes most, surrounding him with the genial presence of the high-minded, that this good company may work its own kind in him who frequents it. But he will likewise seek to turn him aside from such company, whether of books or of men, as might tend to lower his reverence, his choice, or his standard. He will, therefore, discourage indiscriminate reading, and that worse than waste which consists in skimming the books of a circulating library. He knows that if a book is worth reading at all, it is worth reading well; and that, if it is not worth reading, it is only to the most accomplished reader that it _can_ be worth skimming. He will seek to make him discern, not merely between the good and the evil, but between the good and the not so good. And this not for the sake of sharpening the intellect, still less of generating that self-satisfaction which is the closest attendant upon criticism, but for the sake of choosing the best path and the best companions upon it. A spirit of criticism for the sake of distinguishing only, or, far worse, for the sake of having one’s opinion ready upon demand, is not merely repulsive to all true thinkers, but is, in itself, destructive of all thinking. A spirit of criticism for the sake of the truth--a spirit that does not start from its chamber at every noise, but waits till its presence is desired--cannot, indeed, garnish the house, but can sweep it clean. Were there enough of such wise criticism, there would be ten times the study of the best writers of the past, and perhaps one-tenth of the admiration for the ephemeral productions of the day. A gathered mountain of misplaced worships would be swept into the sea by the study of one good book; and while what was good in an inferior book would still be admired, the relative position of the book would be altered and its influence lessened. Speaking of true learning, Lord Bacon says: “It taketh away vain admiration of anything, _which is the root of all weakness_.” The right teacher would have his pupil easy to please, but ill to satisfy; ready to enjoy, unready to embrace; keen to discover beauty, slow to say, “Here I will dwell.” But he will not confine his instructions to the region of art. He will encourage him to read history with an eye eager for the dawning figure of the past. He will especially show him that a great part of the Bible is only thus to be understood; and that the constant and consistent way of God, to be discovered in it, is in fact the key to all history. In the history of individuals, as well, he will try to show him how to put sign and token together, constructing not indeed a whole, but a probable suggestion of the whole.