There is a third silent party to all our bargains. The nature and soul of things takes on itself the guaranty of the fulfilment of every contract, so that honest service cannot come to loss. If you serve an ungrateful master, serve him the more. Put God in your debt. Every stroke shall be repaid. The longer the payment is withholden, the better for you; for compound interest on compound interest is the rate and usage of this exchequer.