The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
有时候最真实的东西反而是你看不见的。
我们谷物生产成功的真正标准不仅在于产量,还在于我们如何平衡生产力与环境管理。
如果我们不考虑长期影响,开采效率就毫无意义。
地球是广阔宇宙舞台上一个非常小的舞台。
"Theatre is the art of the invisible made visible."