No man knows himself as an original.
The love of gain never made a painter; but it has marred many.
He who has no pleasure in looking up, is not fit so much as to look down.
Never judge a work of art by its defects.
The only competition worthy of a wise man is with himself.
The painter who is content with the praise of the world for what does not satisfy himself, is not an artist, but an artisan; for though his reward be only praise, his pay is that of a mechanic.