"A promise made is a debt unpaid"

This quote by Robert Service is a tip that a guarantee is a commitment that should not be taken lightly. It indicates that when someone makes a promise, they are taking on a duty to meet it. The quote suggests that a promise resembles a debt that needs to be paid, and if it is not, it will remain unpaid. This is a suggestion to be conscious of the promises we make and to take them seriously. It is also a suggestion to be honest and credible when making a guarantee, as it is a reflection of our character. The quote is a reminder that guarantees ought to not be made lightly, and that we should aim to keep our word.