Forgive me of saying so, but good things just have to grow very slowly. I say this in connection with your plans.... for launching a journal. I do not think that the time is favourable for it. More must be achieved in art in that direction. I hardly know anyone who is really creating art in our style, in other words, art which has arrived....(i. e. you will have to include in it [in the planned art-Journal 'De Stijl'] what is not consistent with our ideas.)
Letter to Theo van Doesburg, Amsterdam, Novemer 20, 1915; as quoted in Letters of the great artists, (transl. Daphne Woodward), Richard Friedenthal, Thames and Hudson, London, 1963, p. 234