I am working in Paris. I cannot for a single day get the thought out of my head that there probably exists something essential, some immutable reality, and now that I have lost everything else (thank God, it gets lost all on its own) I am trying to preserve this and, what is more, not to be content. In a word: I am working.

In a letter to A. N. Benois, 1911, as quoted in Marc Chagall - the Russian years 1906 – 1922, editor Christoph Vitali, exhibition catalogue, Schirn Kunsthalle Frankfurt, 1991, p. 146