When I adjust materials of different kinds to one another, I...

When I adjust materials of different kinds to one another, I have taken a step in advance of mere oil painting, for in addition to playing off color against color, line against line, form against form, etc., I play off material against material, for example, wood against sackcloth. I call the weltanschauung from which this mode of artistic creation arose 'Merz.' The word 'Merz' had no meaning when I formed it. Now it has the meaning which I gave it. The meaning of the concept 'Merz' changes with the change in the insight of those who continue to work with it.