在采矿业中，效率和环境保护必须齐头并进。
自然法的最低内容对于任何社会的生存都是必要的。
真相藏在词语之间的沉默里。
Life is far too important a thing ever to talk seriously about it.
Adaptability is the cornerstone of resilience in an ever-changing market.
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.