A quote
I have, however, discussed the matter with sufficient fulness in the volumes which I have written, entitled “On Benefits.” What I think should rather be investigated is this,—a question which I feel has not been made sufficiently clear: "Whether he who has helped us has squared the account and has freed us from our debt, if he has done us harm later." You may add this question also, if you like: “when the harm done later has been more than the help rendered previously.”
Seneca·Letter 81 (§3)·trans. Gummere