Adversity leads to prosperity. 穷则思变。

　　A friend is easier lost than found.得朋友难，失朋友易。

　　He is wise that is honest. 诚实者最明智。

　　He laughs best who laughs last. 谁笑到最后，谁笑得最好。

　　Kill two birds with one stone.一箭双雕。

　　Knowledge is power. 知识就是力量。