衡量一家矿业公司的真正标准不是它的股价，而是它的管理责任。
The true measure of a mining company isn't its stock price, but its stewardship.
"The past is a foreign country; they do things differently there."
The growth of knowledge is the key to solving problems.
不要害怕失败，因为每一次失败都是成功的练习。