I ran short of money while visiting my brother, and borrowed $50 from him.

After my return home, I wrote him a short letter every few weeks, enclosing a $5 check in each one. He called me up and told me how much he enjoyed the letters, regardless of the money; I had never written regularly before.

Eventually I sent off a letter and the last five-dollar check.

In my mail box the next week I found an envelope from my brother. Inside was another $50.