"My picture [A Boat Passing a Lock, 1823-6] is liked at the [Royal] Academy, indeed it forms a decided feature and its light can not be put out. Because it is the light of nature - the Mother of all that is valuable in poetry - painting or anything else... my execution annoys most of them and all the scholastic ones - perhaps the scarifies I make for 'lightness' and 'brightness' is too much but these things are the essence of Landscape."