A good manager is frugal in the use of his funds. 一个好的经营者节约使用资金。
Interest, too, is a price, the price paid for the use of money, and it has to be enough to make it worthwhile for the lender to forgo use of the funds. 利息也是一种价格，一种支付使用金钱的价格，而且这种价格要足够支付债主不能使用资金而造成的损失。
