Sustainability isn't an option; it's a responsibility we owe to future generations.

There is something profoundly mysterious about quantum mechanics that we still don't understand.

给狗扔一根骨头不是慈善。慈善是当你和狗一样饿的时候和狗分享一根骨头。

事物之间的空间往往比事物本身更重要。