Proust on how new art changes the ways in which we see the world. From about half-way through The Guermantes Way.
“People of taste and refinement tell us nowadays that Renoir is one of the great painters of the last century. But in so saying they forget the element of Time, and that it took a great deal of time, well into the present century, before Renoir was hailed as a great artist. To succeed thus in gaining recognition, the original painter, the original writer proceeds on the lines adopted by oculists. The course of treatment they give us by their painting or by their prose is not always agreeable to us. When it is at an end the operator says to us: ‘Now look!’ And, lo and behold, the world around us (which was not created once and for all, but is created afresh as often as an original artist is born) appears to us entirely different from the; old world, but perfectly clear. Women pass in the street, different from what they used to be, because they are Renoirs, those Renoir types which we persistently refused to see as women. The carriages, too, are Renoirs, and the water, and the sky: we feel tempted to go for a walk in the forest which reminds us of that other which when we first saw it looked like anything in the world except a forest, like for instance a tapestry of innumerable shades but lacking precisely the shades proper to forests. Such is the new and perishable universe which has just been created. It will last until the next geological catastrophe is precipitated by a new painter or writer of original talent.”