I find it increasingly necessary to express my ideas first in engraving or lithography so that they may develop before I start to paint. Every year my form and expression become more sensitive, and my ideas frequently have to pass through three graphic stages before I can start on the canvas.. .I can hear you say no, that is impossible because the value of the colors demands quite different treatment from black and white, but it is the inner idea that I try to establish firmly through graphic preparation.