Machinery and labor-saving devices are only valuable as they serve to reduce the cost of manufacture.
求学的最大益处,在于自我改变气质。
我们对宇宙了解得越多,就越意识到我们不知道的还有很多。
If you want to solve big problems, start by asking the right questions.
时间是最好的作者:它总能找到一个完美的结局。