Having red several of your books, I wonder if you [Rudolf Steiner, the founder of Anthroposophy] could find the time to read my brochure 'Le Néo-Plasticisme', which I am closing. I believe that Neo-Plasticism is the art of the foreseeable future for all true anthroposophists and theosophists. Neo-Plasticism creates harmony through the equivalence of the two extremes: the universal and the individual. The former by 'revelation', the latter by 'deduction'... It was impossible to bring about an equilibrium of relationships other than by destroying the 'form', and replacing it by a new 'universal' expressive means.

In a letter to Rudolph Steiner; as quoted in Abstract Painting, Michel Seuphor, Dell Publishing Co 1964, p. 83-85