The first step was to choose from nature a motif in color, and with that motif to paint from nature, the form still being objective.
The second step was to apply this same principle to form, the actual dependence upon the object (literal to representation) disappearing, and the means of expression becoming purely subjective.
After working for sometime in this way, I no longer observed in the old way, and not only began to think subjectively, but also to remember certain sensations purely through their form and color, that is by certain shapes, planes, light, or character lines determined by the meeting of such planes.
With the introduction of the line motif the expression grew more plastic, and the struggle with the means became less evident.
DOVE
Based on Leaf Forms and Spaces
Referring to the painting reproduced he said:
It is a choice of three colors, red, yellow, and green, and three forms selected from trees and the spaces between them that to me were expressive of the movement of the thing which I felt.