Some customers want to use your safe because safes are hard and expensive to get and some -and then you've got all this gold, so you might as well lend it out.

顾客需要使用你的保险箱,因为对个人而言保险箱既昂贵又难以获得,这样你就拿到他们的金子,然后你可以把金子借出去

耶鲁公开课 - 金融市场课程节选

Now Mr. Milton took some risks when he separated himself from his cash and lent money to his clients, or lent more money to his clients than the collateral, the gold, was actually worth. And the motive for that risk, of course, the motive for that investment, was the expectation of a profit.

但是弥尔顿先生却冒着把自己和他的现金,也丢了的风险，或者借出去的钱比担保财产还要多，他这么投资的动机是，希望获得收益。

耶鲁公开课 - 弥尔顿课程节选