1、To be both a speaker of words and a doer of deeds.既当演说家，又做实干家。

2、Bad times make a good man.艰难困苦出能人。

3、Doubt is the key to knowledge.怀疑是知识的钥匙。

4、The greatest test of courage on earth is to bear defeat without losing heart.世界上对勇气的考验是忍受失败而不丧失信心。

5、A man's best friends are his ten fingers.人的朋友是自己的十个手指。