“What a pleasure is it to see such a 'Frans Hals' [because the painter Frans Hals was also painting in a loose brush-technique] - it is completely different from the paintings - there are so many of them - where everything has been smoothed out in the same painstaking way.. ..[Jozef] Israëls has a much healthier and more solid technique, like in that very old canvas [1856!] 'De visser van Zandvoort' with beautiful clair-obscure, then the technique of those who are at every spot equally smooth, flat and distinguished, because of their view, cold- colored..”