My duty will be done, when I sell to them all I can at a fair profit.

If he choose to take an excess of profit in his own dealing, that is his affair.

I need not be partaker in his guilt." "Edward!" returned his wife, laying her hand upon his arm, and speaking in a low, impressive voice--"Do you really believe that you can give satisfaction to Mr.Jasper in all things, and yet keep your conscience void of offence before God and man?
Think of his character and requirements--think of the kind of service you have, in too many instances, rendered him--and then say whether it will be possible to satisfy him without putting in jeopardy all that a man should hold dear--all that is worth living for?
Oh, Edward! do not let this offer blind you for a moment to the real truth." "Then you would have me reject the offer ?" "Without an instant's hesitation, Edward." "It is a tempting one.

And then, look at the other side, Edith.

Only four hundred dollars a year, instead of six hundred and fifty." "I feel it as no temptation.