生命中最美好的东西都是免费的。显然，我们最宝贵的资源是时间。

Psychology should be the science of mental life, both of its phenomena and of their conditions.

Silence is not the absence of sound, but the presence of something deeper.

善于教导的人必须遇到善于学习的人，才能使教育的效果更大。

Leadership is about empowering others to achieve what they thought was impossible.

趋势是你的朋友。

能源需求与环境保护之间的平衡是我们这个时代的挑战。

释义：智慧本就在你心里，无需外求。