矿工的安全永远不应该用成本效益分析来衡量。
A miner's safety should never be measured in cost-benefit analyses.
The only man who behaves sensibly is my tailor; he takes my measure anew every time he sees me, while all the rest go on with their old measurements.
States are rational actors, and they will always act in their own self-interest.
True leadership in farming means making tough decisions for long-term gains.
The only way to achieve greatness is to love what you do.