Vincent van Gogh: This is among his last paintings: Wheat Field with Crows. Oil on Canvas. In a letter to Theo he writes: "They are vast stretches of wheat under troubled skies, and I did not have to go out of my way very much in order to try to express sadness and extreme loneliness…. I'm fairly sure that these canvases will tell you what I cannot say in words, that is, how healthy and invigorating I find the countryside.” Auvers-sur-Oise: July, 1890. Amsterdam: Van Gogh Museum.