My new installment [Mondrian moved to a new studio in Paris, where he applied the principles of Neo-Plasticism into the interior of his studio] is about decoration, occasioned by my studio here, where I've set up a sort of display. I couldn't work directly on the walls, so I had to make do with pieces of painted cardboard. But in any case, I am now convinced that in this way it is possible to realize Neo-Plasticism in the interior. Of course I had to paint the furniture as well. It was worth the effort, as it has a favourable influence on my work.
In a letter to Theo van Doesburg, 4 December 1919; as quoted in Mondrian, -The Art of Destruction, Carel Blotkamp, Reaktion Books LTD. London 2001, p. 141