The Devil's Dictionary: Bondsman
A fool who, having property of his own, undertakes to become responsible for that entrusted to another to a third.
Philippe of Orleans wishing to appoint one of his favorites, a dissolute nobleman, to a high office, asked him what security he would be able to give.
"I need no bondsmen," he replied, "for I can give you my word of honor."
"And pray what may be the value of that?" inquired the amused Regent.
"Monsieur, it is worth its weight in gold."