“Modern rustic” may sound like a bougie home decorating style, but it is also the term Gaston Chaissac (1910–1964) applied to his painting, although he is frequently—and I’d say unfairly—heaped into the category of outsider art, owing to his working-class origins and lack of formal training. But as this impressive collection of paintings and collages made clear, Chaissac was every bit as original as the modernists who inspired him, and his works could stand their ground among the likes of Matisse, Miró, and Picasso.
