If Whistler, to mention an artist representative of some newer movements than those of the eighteenth century, had been on the Pont-Neuf, from what a different source would have come any _coup de lumière_ which might have flashed into his brain! Not during high noon, nor in the gossip of the people, would he have found the motive for his paintings. His _coup de lumière_ would have come "when the evening mist clothes the riverside with poetry, as with a veil, and the buildings lose themselves in the dim sky, and the tall chimneys become campanili, and the warehouses are palaces in the night, and the whole city hangs in the heavens, and fairyland is before us--then the wayfarer hastens home; and the working man and the cultured one, the wise man and the one of pleasure, cease to understand, as they have ceased to see, and Nature, who, for once, has sung in tune, sings her exquisite song to the artist alone, her son and her master--her son in that he loves her, her master in that he knows her." Whistler's eyes would have been directed towards the beauties of colour and of tone that he might find on the river or on its banks; and the Isle de France, as it is seen by the tired journalist as he makes his way to the Latin Quarter at dawn of day, with its tender grays, and its evasive charms of exquisite light and colour, would be of more account to him than {35} all the conversations in the world, however vehement they might be. The idea of preaching or moralizing on canvas would never have entered his head for a moment. When Greuze, in harmony with the raw notions of Diderot upon art, did preach, his homilies were singularly unimpressive. The pictures which he painted when in this sermonizing vein have all the elements that go to the making of what is now called melodrama. The scenes are not the result of a discriminating observation of real life; are not, to use Zola's phrase, "Nature seen through a temperament." They are founded upon conventions, upon the artificial and sentimental ideas of life that have by some curious freak of the human mind established themselves in books and plays and pictures.