Ingersoll's story of the man that went down from heaven on a reduced-rate excursion ticket good for 30 days --- and tried to sell his return ticket.

淌自己的汗，吃自己的饭，自己的事情自己干；靠天、靠地、靠父母，不算是好汉。人只有靠自己的力量，才能得以生存，不依靠自己，就将无法生存。

The ocean is not just a resource; it's our responsibility to protect it for future generations.

模形式的算术是窥探宇宙隐藏结构的窗口。