采矿业是周期性的，但伟大的公司是由那些既能驾驭低迷期又能驾驭繁荣期的人建立的。
The mining industry is cyclical, but great companies are built by those who can navigate the downturns as well as the booms.
The power is in the balance: we are our injuries, as much as we are our successes.
The personal example of a teacher is the most useful sunshine that nothing can replace for the soul of young people.
Innovation is not just about technology; it's about changing the way we think and operate.
The most dangerous thing is not failure, but complacency.