Some day soon you will receive in the mail a little golden-rod colored card, it will bring a message. It will ask a PROMISE of you, don’t cast it ignoringly aside, it appeals not for your money, nor your wife, nor your man-servant, nor your maid-servant, nor your ox, nor your car, nor your radio, it seeks only the product of your toil which is in reality something you love to do.
Source: wiktionary