The law of the world is evolution. _L'homme absurde est celui qui ne change jamais_; and Zola, amid the very triumph of "L'Assommoir," at the very moment when he was expounding the principles of Naturalism in the "Viestnik Yevropi" and "Le Voltaire" (which he joined when "Le Bien Public" ceased publication), was already, and quite unconsciously, perhaps, undergoing a change. He was in some degree carried away by the sudden accession of ample means after years of poverty and years of battle. In the long run he showed himself superior to fortune, whether it were favourable or adverse, but he found its first smile irresistible, as so often happens with those who have long toiled and suffered and cursed their fate. Briefly, he proved no exception to the general rule, and he was taunted with having failed to depart from it, being candidly told in print that, like Herbert Spencer and Gustave Flaubert, he ought to have been quite content with mere lodging-house surroundings, and that he made a ridiculous use of his comparative wealth. Most of his money, it may be mentioned, was lavished on his property at Médan, to which he made many additions, building, for instance, a large square tower in which he fitted up a spacious workroom, whose huge window suggested that of a studio. In that room in later years most of his books were written. And as wealth accrued a second large tower was added to the first, followed by some smaller ones flanking the entrance of the property. All this was denounced as bad taste; and unquestionably, from an architectural point of view, Médan, with one bit of building added here and another there, became a strange-looking place. At the same time it remains an interesting memorial of the rise of Zola's fortunes. One knows, for instance, that the first tower was built with money derived from "L'Assommoir," that the second was erected with some of the proceeds of "Nana," that this and that enlargement were paid for by "La Terre" or "La Débâcle." Certainly no common _parvenu_ would have left such a tell-tale record. It is doubtful whether he would have been content to dwell during the greater part of the year in an out-of-the way village like Médan; and even had he retained possession of the property he would surely have demolished the original humble little house and have erected some grand Louis Treize château on the site. But another charge preferred against Zola was that he wasted time and money in collecting works of art and curios--the latter more often than the former. In his novel, "L'Œuvre," he gave an explanation of this which is worth quoting: