Hold on to your dreams, even if the whole world doubts you.

Happiness is not something ready-made. It comes from your own actions.

Innovation in mining technology isn't an option—it's an obligation we owe to both our workers and the environment.

精神错乱：一遍又一遍地重复作同一件事，而期待会有不同的结果。

The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil, no good, nothing but blind, pitiless indifference.