Democracy is the worst form of government except for all those other forms that have been tried from time to time.

——1963年6月25日在西德市政厅柏林墙前的演说

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

进步并非不可避免；它是深思熟虑的选择和行动的结果。

Science is the art of asking the right questions.

世界不是从他想象的地方运行的。不是从城堡的墙壁，而是从账房，不是由号角的呼唤，而是由算盘的点击，不是由大刀的磨擦和点击，而是由笔的刮擦。