Since all preceding schools of painting have proved that the spirit of beauty does not lie in nature but in the 'I', now that painting in all its various expressions from Giotto to Cézanne has demonstrated that all beauty is in the 'I', that the 'I' is all emotion and that beyond the 'I' nothing can exist because all being exists only in relationship with the 'I', now the time has come to develop from this 'I' a new style. As soon as this 'I' becomes the general, universal 'I' instead of the individualistic or the rationalistic one, the new style will be a general style.

his article: 'The new style in painting', in the Dutch journal De Avondpost, 2 mei 1916