如果你感到迷茫，就看看自己的内心。

"A book is a dream that you hold in your hand."

The only paradise is paradise lost.

在量子力学中，粒子的概念失去了它通常的意义。

The true cost of coal must account for both its immediate value and its long-term impact on communities and ecosystems.

一个思想的价值在于它对行为的后果。