—— 请按键盘 空白键 开始游戏 ——

The value of an auction lies not just in the revenue it generates, but in the efficiency of the allocation.
The more you know, the more you realize you don't know.
A well-run quarry is a symphony of precision, safety, and respect.《The Quarry Master's Manual》
The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.