A pig bought on credit is forever grunting. – Proverb

Nothing so cements and holds together all the parts of a society as faith or credit, which can never be kept up unless men are under some force or necessity of honestly paying what they owe to one another. – Marcus Tullius Cicero

Credit is like a looking-glass, which when once sullied by a breath, may be wiped clear again; but if once cracked can never be repaired. – Sir Walter Scott