8. The Art which I have studied and practiced, the Art in which I am
giving instruction, is that of Drawing and Painting.
By the Art of Drawing and Painting I mean expression in pigment-tones
(values, colors, intensities of color) spread in different measures
or quantities and in different shapes: shapes being differences of
character given to a line by its straightness or curvature, to a spot
or area by its outline or contour. By Drawing and Painting I mean,
therefore, expression by lines and spots of paint.