可持续性是采石业的未来，我们必须立即行动。

I don't think that you have any insight whatsoever into your capacity for good until you have some well-developed insight into your capacity for evil.

The reality is: sometimes you lose. And you're never too good to lose. You're never too big to lose. You're never too smart to lose. It happens.

The world is a great wheel, and we are the spokes.

勇敢追求让你灵魂燃烧的事物。