心理与物理之间的界限并不像我们通常认为的那样清晰。

积极情绪不是微不足道的奢侈品，而是最佳功能的关键必需品。

The road to success is always under construction—keep building.

He who wants to do good knocks at the gate;he who loves finds the gate open.

人类的思想是如此复杂，事物之间是如此纠缠，以至于要解释一片草叶，就必须绘制宇宙的图表。

一本好书应该是劈开我们内心冰海的斧头。