自由不是礼物，而是每日的征服。

The only way to tell the truth is to speak without a mouth.

The most important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.

矿工的技能和奉献精神与他们带到地面的煤炭一样宝贵。

A true leader listens more than they speak and learns from everyone around them.

最伟大的领导者不一定是做最伟大事情的人，而是能让人们去做最伟大事情的人。

最好的领导者是那些能够授权他人领导的人。