可持续性是采石业的未来，我们必须立即行动。
Sustainability is the future of quarrying, and we must act now.
The balance of power is the scale of peace.
The people who are crazy enough to think they can change the world are the ones who do.
曾经尝试过，曾经失败过。没关系。再试一次。再失败一次。失败得更好。