He who receives a benefit with gratitude, repays the first installment of it.
Nature is just to all mankind, and repays them for their industry. She renders them industrious by annexing rewards in proportion to their labor.
In all the world there is nothing so remarkable as a great man, nothing so rare, nothing which so well repays study.
What God may have enabled me to do is but a repayment of debt, and he who repays a debt deserves no praise.