The truth is a knife, and it cuts both ways.

The true measure of our success is how we balance energy needs with environmental responsibility.

Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.

In mining, you don't find success by digging in the same hole forever - innovation is our lifeline.

有时保持理智的唯一方法就是偶尔发疯。