可持续性不是选择，而是矿业未来的必然要求。
【译文】 孔子说：“温习旧知识时，能有新收获，就可以做老师了。”
过去从未真正消失；它活在我们体内，塑造着我们。
The battle of life is already half won by the young man who is brought personally in contact with high officials; and the great aim of every boy should be to do something beyond the sphere of his duties--something which attracts the attention of those who over him.