Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.

The first rule of government spending: why build one when you can have two at twice the price?

Experience is simply the name we give our mistakes.

我因展望未来而感受到的喜悦——成为注定从世界上消除最大灾难之一的工具，与享受独立、家庭和平与幸福的殷切希望交织在一起，常常占据了我的整个心灵。