_Hokusai._


CXLII

When you are painting put a piece of black velvet between your eye and
nature; by this means you will easily convince yourself that in nature
everything is blond, even the dark trunks of trees relieved against the
sky. Black, when it is in shadow, is strong in tone, but ceases to be
black.

_Dutilleux._


CXLIII

The Variation of Colour in uneven Superficies, is what confounds an
unskilful Painter; but if he takes Care to mark the Outlines of his
Superficie, and the Seat of his Lights, he will find the true Colouring
no such difficult matter: For first he will alter the Superficies
properly as far as the Line of Separation, either with White or Black
sparingly as only with gentle Dew; then he will in the same Manner bedew
the other Side of the Line, if I may be allowed the expression, then
this again and so on by turns, till the light Side is brightened with
more transparent Colour, and the same Colour on the other Side dies away
like Smoak into an easy Shade. But you should always remember, that no
Superficie should ever be made so white that you cannot make it still
brighter: Even in Painting the whitest Cloaths you should abstain from
coming near the strongest of that Colour; because the Painter has
nothing but White wherewith to imitate the Polish of the most shining