The fact is, that the greater number of persons or societies throughout Europe, whom wealth, or chance, or inheritance has put in possession of valuable pictures, do not know a good picture from a bad one, and have no idea in what the value of a picture really consists. [Footnote: Many persons, capable of quickly sympathizing with any excellence, when once pointed out to them, easily deceive themselves into the supposition that they are judges of art. There is only one real test of such power of judgment. Can they, at a glance, discover a good picture obscured by the filth, and confused among the rubbish, of the pawnbroker's or dealer's garret?] The reputation of certain work is raised partly by accident, partly by the just testimony of artists, partly by the various and generally bad taste of the public (no picture, that I know of, has ever, in modern times, attained popularity, in the full sense of the term, without having some exceedingly bad qualities mingled with its good ones), and when this reputation has once been completely established, it little matters to what state the picture may be reduced: few minds are so completely devoid of imagination as to be unable to invest it with the beauties which they have heard attributed to it. SECTION CXV. This being so, the pictures that are most valued are for the most part those by masters of established renown, which are highly or neatly finished, and of a size small enough to admit of their being placed in galleries or saloons, so as to be made subjects of ostentation, and to be easily seen by a crowd. For the support of the fame and value of such pictures, little more is necessary than that they should be kept bright, partly by cleaning, which is incipient destruction, and partly by what is called "restoring," that is, painting over, which is of course total destruction. Nearly all the gallery pictures in modern Europe have been more or less destroyed by one or other of these operations, generally exactly in proportion to the estimation in which they are held; and as, originally, the smaller and more highly finished works of any great master are usually his worst, the contents of many of our most celebrated galleries are by this time, in reality, of very small value indeed. SECTION CXVI. On the other hand, the most precious works of any noble painter are usually those which have been done quickly, and in the heat of the first thought, on a large scale, for places where there was little likelihood of their being well seen, or for patrons from whom there was little prospect of rich remuneration. In general, the best things are done in this way, or else in the enthusiasm and pride of accomplishing some great purpose, such as painting a cathedral or a camposanto from one end to the other, especially when the time has been short, and circumstances disadvantageous.