一个运营良好的采石场是物流、效率和团队合作的交响乐。

The value of all things contracted for, is measured by the appetite of the contractors.

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.