In Shimer’s fine arts class, we typically do a unit on Cézanne that includes a selection of Rilke’s letters written after a particularly vivid encounter with an exhibition of Cézanne’s art. Out of curiosity, I picked up Rilke’s more formal study of Rodin, which was published at about the same time he was writing the Cézanne letters. Both texts are beautifully written, passionate responses to artworks that Rilke had not only studied closely, but felt deeply. In them, Rilke displays a profound sympathy for both artists as artists and as human beings. I strongly recommend you read both if you’re into that kind of thing.
Nonetheless, it seems to me that an unsympathetic reader could conclude that Rilke is, in the last analysis, simply praising both artists in exuberant terms without providing much in the way of concrete tools for thinking through the nature of Cézanne and Rodin’s particular artistic achievements.
This reading, though plausible, is in my opinion ultimately wrong. What Rilke is saying about each artist is simple and yet challenging and profound. In his letters on Cézanne, the point he returns to again and again is that Cézanne makes his paintings out of color. In his book on Rodin, he repeatedly emphasizes the fact that Rodin makes his sculptures out of planes.