幸福不是没有问题，而是有能力处理问题。
Happiness is not the absence of problems but the ability to deal with them.
The computer is a tool, not a substitute for thinking.
"The only thing that makes life possible is permanent, intolerable uncertainty; not knowing what comes next."
The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
The world is full of obvious things which nobody by any chance ever observes.
我们必须平衡眼前的能源需求与长期的可持续性目标。