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）

现实是一个视角问题；你离过去越远，它就显得越具体和可信。

The science of government it is my duty to study, more than all other sciences; the arts of legislation and administration and negotiation ought to take the place of, indeed to exclude, in a manner, all other arts.

The best way to predict the future is to create it.