Colour and I are one. - Paul Klee

Graphic work as the expressive movement of the hand holding the recording pencil.. ..is so fundamentally different from dealing with tone and color that one can use this technique quite well in the dark, even in the blackest night. On the other hand, tone (movement from light to dark) presupposes some light, and color presupposes a great deal of light.

His [ Vincent van Gogh's] line is new and yet very old, and happily not a purely European affair. It is more a question of reform than of revolution.

The changeover was complete; in the summer of 1907 I devoted myself entirely to the appearance of nature and upon these studies built my black-and-white landscapes on glass, 1907/1908.