1. Bad times make a good man.

　　艰难困苦出能人。

　　2. There is no royal road to learning.

　　求知无坦途。

　　3. The greatest test of courage on earth is to bear defeat without losing heart.

　　世界上对勇气的最大考验是忍受失败而不丧失信心。

　　4. A man's best friends are his ten fingers.

　　人最好的朋友是自己的十个手指。