当我们的知识之圆扩大之时，我们所面临的未知的圆周也一样。

Small acts of kindness can boost your mood more than you might expect.

"The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them."

美国军人的八项素质，忠诚、责任、尊重、无私、服从、荣誉、正直，个人勇气。

唯一使生活成为可能的是永久、难以忍受的不确定性；不知道接下来会发生什么。