我们在自然知识中前进得越远，就越发现最普遍的定律是最简单的。

Adversity is the first path to truth.

The world is full of magic things, patiently waiting for our senses to grow sharper.

The best fertilizer for any farm is the footsteps of the farmer.

Positive psychology is not just about feeling good, it's about the good life.

释义：兰花生长在无人的山谷，不会因为没人佩戴而不散发芳香；船在江河湖海上，不会因为没有人乘坐而不浮在水上；君子行使自己的道义，不因没有人理解而停止。

Courage is grace under pressure.