The past is a foreign country; they do things differently there.

The heart is a fragile thing, easily broken but hard to mend.

你必须对你所做的事情充满热情，否则你永远不会出类拔萃。

The secret of joy in work is contained in one word – excellence. To know how to do something well is to enjoy it.

每个人都有不为世人所知的秘密悲伤；我们常常称一个人冷漠，而实际上他只是悲伤。

不要因为它结束了而哭泣，要因为它发生过而微笑。

I’m positive that in 100 years much of what I take to be true today will be proved to be wrong， maybe even embarrassingly wrong， and I try really hard to identify what it is that I am wrong about today.

采矿技术的创新不是一种选择，而是我们对工人和环境应尽的义务。