Why don't I lend some of it out and I can earn interest on the loan and make money.

为什么我不贷一部分出去呢,这样我就可以通过贷款赚利息了

耶鲁公开课 - 金融市场课程节选

It used to be that people would hide money in their house and it would frequently get stolen and it didn't earn any interest.

过去人们往往是将钱藏在家里,经常被盗不说,还没有任何利息收入

耶鲁公开课 - 金融市场课程节选