坚持和决心是无所不能的。

Curiosity is the driving force behind all great mathematical discoveries.

The first step in the art of cutting metals is to find a man who has the necessary skill and experience to do the work.

The only person you are destined to become is the person you decide to be.

追求理解是人类精神最高尚的追求。

解析：真正正直的人外表反似委曲随和；真正聪明的人，不显露自己，从表面看，好像笨拙；真正有口才的人表面上好像嘴很笨。