That is always difficult [making a repetition of an sold painting] and can only become a potboiler. (translation from the original Dutch: Fons Heijns… - Jozef Israëls

Take care for purity in the paint and not so stinky thick of grease, thin, thin, thin! And just on the light [parts in the painting] here and there a small push of thick [paint].. ..thick house-interiors are unpleasant - long drawing before you start and arrange pleasantly together all things before you start to paint - if the money does not bother you, it is always useful to visit Rott. [Rotterdam]. (translation from the original Dutch: Fons Heijnsbroek)

Actually I don't have any painting at home.. ..they take away everything from me, almost before it's finished.. .That Jewish scribe there, is sold to [Dutch art-seller] Buffa, and it isn't finished at all yet. And this 'Kolen lossen' is also sold.. .Then I have here 'The Mowers' - just set up.. .And that drawing here, will be a good piece too!. .That will become a large painting: a 'Jewish Wedding' - at the moment the groom puts the ring on the finger of his bride.. ..you can't see very much yet, do you? (translation from the original Dutch: Fons Heijnsbroek)

version in original Dutch (citaat van Jozef Israëls in Nederlands): Dat is altijd lastig [een herhaling maken van een al verkocht schilderij] en kan slechts een potboiler [ding voor de verkoop] worden.