Jean-Auguste-Dominique Ingres

Drawing includes three and a half quarters of the content of painting... Drawing contains everything, except the hue

Drawing is the probity of art. To draw does not mean simply to reproduce contours; drawing does not consist merely of line: drawing is also expression, the inner form, the plane, the modeling. See what remains after that.

It takes 25 years to learn to draw, one hour to learn to paint.

Make copies, young man, many copies. You can only become a good artist by copying the masters.