一幅画是一种再现、一种幻觉、一种魔法，所以你所看到的并不是你所看到的。
The best mathematics is timeless.
Every problem in mathematics has a solution; it's just a matter of finding the right path.
The world owes all its onward impulses to men ill at ease; the happy man inevitably confines himself within ancient limits.
采矿技术的创新不是可选项，而是决定采掘业未来的生命线。