About sketches of trees

''I look at what is in front of my eyes, and I say to myself: that white board has got to turn into something -I come back dissatisfied, I lay it to one side and when I have rested a bit, I go and look at it with a kind of awe-. Then I am still disatisfied, because I have that splendid scenery too much in mind to be satisfied. Yet I can see in my work an echo of what appealed to me, I can see that the scenery has told me something, has spoken to me and that I have taken it down in shorthand''

Letters of Vincent Van Gogh