If you can't return a favor, pass it on. -- A.

Related:

• If you learn something by watching the mistakes of others,
  it just seems fair to make some effort to return the...
• You can borrow a book and return
  it too...
• You get what you settle for. --
  Thelma and...
• That was a favor I
  did you...
• Always remember where you came from so you can
  return...
• Everything is possible. Pass the word. -- Rita Mae Brown,
  "Six of...
• Try to give as much as you can...
  Try not to expect anything in return...
• You can blame an administration that has been in office for 12 years,
  or you can blame me. -- Murphy...
• Murphy Brown can spell
  potato...