Every true artist has been inspired more by the beauty of lines and color and the relationships between them than by the concrete subject of the picture.
Piet MondrianColored planes, by their position and size as well as by their value, express only relationships, not forms.
Piet MondrianWhat 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, 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.
Piet Mondrian