The ocean is not just a resource to be exploited, but a delicate ecosystem we must protect for future generations.

There are some natures too noble to curb and too lofty to bend.

数学的本质不仅在于解决问题，还在于提出正确的问题。

谷物种植不仅是一门生意，更是对后代的责任。

Democracy... while it lasts is more bloody than either aristocracy or monarchy. Remember, democracy never lasts long. It soon wastes, exhausts, and murders itself. There is never a democracy that did not commit suicide.

阅读是不动身旅行。