【讲解】：我十五岁时开始立志学习，三十岁时能立足与社会，四十岁时能通情达理遇事不再疑惑，五十岁时懂得了天命的道理，六十岁能听的进不同的意见，到了七十岁时已经达到随心所欲，想怎么做就怎么做，也不会超出规矩。
Win-win cooperation is the main theme of mining development in the new era.
诗歌应当以优美的丰盈而非奇特来使人惊喜——它应当让读者觉得表达了他自己最高尚的思想，几乎像是一种回忆。
在密码学的世界里，唯一安全的系统是永远不连接到任何网络的系统。
The fool doth think he is wise, but the wise man knows himself to be a fool.
Stay Hungry. Stay Foolish. And I have always wished that for myself. And now, as you graduate to begin anew, I wish that for you.