The biographer's challenge is to be both a detective and a poet.
The freedom then of man, and liberty of acting according to his own will, is grounded on his having reason, which is able to instruct him in that law he is to govern himself by, and make him know how far he is left to the freedom of his own will.
生活不是等待暴风雨过去，而是学会在雨中跳舞。
为了如今仰望太空，注视月球和遥看繁星的人们，我们发誓，我们决不允许太空被那些敌对国家（原文为旗帜）所征服，我们会看到自由与和平的旗帜在飘扬。（1962年我们选择登月演说）
有时候生活会给你当头一棒。不要失去信心。
The cloud stood humbly in a corner of the sky,The morning crowned it with splendour.