"What surprising fellows those French painters are. A Millet, Delacroix, Corot, Troyon, Daubigny, Rousseau, and a Daumier.. ..Something else about Delacroix - he had a discussion with a friend about the question of working absolutely from nature, and said on that occasion that one should take one's 'studies' from nature - but that the 'actual painting' had to be made 'by heart'. This friend was walking along the boulevard when they had this discussion - which was already fairly heated. When they parted the other man was still not entirely persuaded. After they parted, Delacroix let him stroll on for a bit - then (making a trumpet of his two hands) bellowed after him in the middle of the street - to the consternation of the worthy passers-by: 'By heart! By heart!' (Par coeur! Par coeur!) I can't tell you how much I enjoyed reading this article and some other things about Delacroix.."