This new plastic idea will ignore the particulars of appearance, that is to say, natural form and colour. On the contrary it should find its expression in the abstraction of form and colour, that is to say, in the straight line and the clearly defined primary colour.
Piet MondrianCubism did not accept the logical consequences of its own discoveries; it was not developing abstraction towards its own goal, the expression of pure reality.
Piet MondrianColored planes, by their position and size as well as by their value, express only relationships, not forms.
Piet MondrianAll painting - the painting of the past as well as of the present - shows us that its essential plastic means were only line and color.
Piet MondrianI think you too recognize the important relationship between philosophy and art, and it is just this relationship that most painters deny. The great masters do grasp it, unconsciously; but I believe that a painter's conscious spiritual knowledge will have a much greater influence upon his art, and that it would be due only to a weakness in him, or lack of genius, should this spiritual knowledge be harmful to his art.
Piet Mondrian