With him [Jongkind] all lies in impression. — Johan Jongkind

"My specialty is really painting moonlight – but I will not forget the sunshine."

"I miss my friends in Paris. Holland is fine to paint, but Paris is the only place to follow ones studies. One can find judges there who will encourage you, who wil tell one what is necessary and what is missing. My great hope is to return as soon as the weather and luck are on my side for he journey."

"You know that the only marine painter that we have, Jongkind, is dead to art. He is completely mad."

"Jongkinds craft hardly concerns him; and this results in the fact that, before his canvases, it does not concern you either. The sketch finished, the painting completed, you do not trouble yourself with the execution, it disappears before the power of the charm of the effect.."

"He works himself up into a frenzy, on order to make great strides, before returning to Paris."

"What I have suffered is unbelievable.. .I was given nothing [for his paintings in the Salon of 1855], not even a honorable mention."