Cicero (106 BC - 43 BC) There is no duty more obligatory than the repayment of kindness.
The Mouse, recognizing his roar, came up and gnawed the rope with his teeth, and, setting him free, exclaimed: "You ridiculed the idea of my ever being able to help you, not expecting to receive from me any repayment of your favor; but now you know that it is possible for even a Mouse to confer benefits on a Lion.
