“But,” argues he, “by not authorizing you, the law forbids you to exact repayment.” There are many things which are not enforced by any law or process, but which the conventions of society, which are stronger than any law, compel us to observe. There is no law forbidding us to divulge our friend’s secrets; there is no law which bids us keep faith even with an enemy; pray what law is there which binds us to stand by what we have promised? There is none. Nevertheless I should remonstrate with one who did not keep a secret, and I should be indignant with one who pledged his word and broke it. “But,” he argues, “you are turning a benefit into a loan.” By no means, for I do not insist upon repayment, but only demand it; nay, I do not even demand it, but remind my friend of it. Even the direst need will not bring me to apply for help to one with whom I should have to undergo a long struggle.