Louis Aston Knightâs preference is comically captured in his common practice of standing in the river to paint. Louis Aston Knight was not content to try and capture the scene from the safety and comfort of the dry bank, but was determined to attain a real likeness of the delicate ripples in a pool or the current of a stream by painting from within them, clad in high-water boots, the water lapping against his body as he worked.