If you have an apple and I have an apple, and we exchange apples, we both still only have one apple. But if you have an idea and I have an idea, and we exchange ideas, we each now have two ideas.
你和我各有一个苹果，如果我们交换苹果的话，我们还是只有一个苹果。但当你和我各有一个想法，我们交换想法的话，我们就都有两个想法了。
Though debts are condemned in the financial world, the world of friendship and love may perversely depend on well-managed debts.
煤炭的未来取决于经济增长与环境责任的平衡。
【释义】见识的少，感受到奇怪的事就多，这是世之常理。【延伸】《误杀》里有一句经典台词：当你看过一千部电影，就会发现这个世界上根本没有离奇的事情。见识越广，计较越少，经历越多，抱怨越少，越闲，越矫情。