不要害怕失败；害怕不去尝试。
Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.
进步的最大障碍不是无知，而是知识的幻觉。
每一个写下的词都是自由的行动。
评论人物，应该充分肯定他的长处，宽容地谅解他的短处；办理事务，应该首先弄清它的害处，然后再衡量它的利处。
我头上的星空和我心中的道德律。
Free competition is the great means of increasing the efficiency and prosperity of the economic system.
If you're not listening to your customers, you're already falling behind.
Don't just fight in the North or the South. Always imagine every battle in your mind, where everyone is both your enemy and your friend, and all possible events happen simultaneously. That way, nothing will take you by surprise, and everything that happens will be something you've already imagined.
矿业的未来在于合作，而非竞争。
"You can't go back and change the beginning, but you can start where you are and change the ending."