This evening the Anthroposophical Society invited me to give a lecture about modern art, on 13 March. They start to wake up here [in the Netherlands]... Please, tell me something, what I should emphasize, what you find most important. I shall also read something from 'The Spiritual in Art' by Kandinsky... But we still have other views on the whole, isn't it. I don't always agree with Kandinsky, and often more with your views. So please write a little much... You know, for me it is always easier to paint my principles.