As soon as artistic activity turns into an 'ism', it ceases to be artistic activity. To be alive is to engage in a daily struggle for form and for survival. (By way of analogy: social concern is a form and a method that is currently seen as appropriate and right. But where it elevates itself into Socialism, an order and a dogma, then it loses its best and truest qualities and may turn criminal.)

The Daily Practice of Painting, Writings (1962-1993)