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。
"I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit."
The two most important days in your life are the day you are born and the day you find out why.