I invent nothing, I rediscover.

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

成功不是幸福的关键。幸福是成功的关键。如果你热爱你所做的事情，你就会成功。

采矿业必须在安全、可持续性和社会责任方面以身作则。