Sustainable quarrying isn't an option; it's our obligation to future generations.

Success is going from failure to failure without losing enthusiasm.

Every border implies the violence of its maintenance.

免费的疫苗比昂贵的治疗更有价值，但更难推广。

Recycling should be the last resort, not the first solution. Better design comes first.

强大的工具带来巨大的责任，尤其是当这些工具可以改变生命本身时。