I am searching for the proper harmony of rhythm and unchanging proportion, as I wrote in the article. And I cannot tell you how difficult it is. [Mon… - Piet Mondrian

Only now I become conscious that my work in black, white and little color planes has been merely 'drawing' in oil color. In drawing, the lines are the principal means of expressions.. .In painting, however, the lines are absorbed by the color planes; but the limitations of the planes show themselves as lines and conserve their great value.

I believe that in our period it is definitely necessary that, as far as possible, the paint is applied in pure colours, set next to each other in a pointillist or diffuse manner. This is stated strongly, and yet it relates to the idea which is the basis of meaningful expression in form, as I see it. It seems to me that the clarity of ideas should be accompanied by a clarity of technique.

And then about whether or not to work from a given in nature. In my view, you [ Van Doesburg ] define this in a rather narrow sense. In the main, I do agree with you that the destruction of the natural, and it reconstruction, must be accomplished according to a spiritual image, but I believe that we should take a broad view here. What is natural does not have to be a representation of something. I'm now working on a thing that is a reconstruction of a starry sky ['Composition, Checkerboard Dark Colours', 1919] and yet I'm making it without a given from nature. Someone who says he uses a theme from nature can be right, but also someone who says he uses nothing at all.