Sketching Quotes - page 2
It was Constable's persuasion that you should always work in one material: if a water-colour painter, that you should take Nature in water-colour; if an oil-painter, in oil. Not that he rigidly carried out his own views, as he always had a small sketchbook with him in which he noted down anything that struck him; but his sketching, both in water-colour and pencil, was very inferior to his oils.
John Constable
It was the habit of Titian to paint pictures for the places they were intended to fill, and in this he fol- lowed the traditions of all the schools. Sketching and laying in the subjects so far as he was able in his workshop at home, he took the canvas to the spot in which it was to hang, and finished it there.
Titian