"But the empty spaces [in the painting] devoid of all shine or reflection we put in the fifth and last grade, and see them as identical to the black, the deepest colour [tone]. This remark will make us careful not to try and go further than the ability of our paint/colour allows. Because, if we go too far in height we will lack at the bottom of the picture [from light gradations: light to dark]. Such as will happen to those who, when painting a picture of the night, place a burning torch or candle in the foreground. They then no longer have the possibility of giving the rest of the painting clarity. As far as he was able, Rembrandt painted the strength of candlelight in a few brown prints, but when one covers the light the rest of the work remains dark because we tend to hold our hand up to the light, so that this does not obstruct our ability to differentiate everything clearly and vividly."