Authors:

We are never quits with those who oblige us," was Dantes' reply; "for when we do not owe them money, we owe them gratitude.

Alexandre Dumas (2016). “The Count of Monte Cristo”, p.19, Xist Publishing
We are never quits with those who oblige us, was Dantes' reply; for when we do not owe them money, we owe them gratitude.