A painting requires a little mystery, some vagueness, and some fantasy.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法：它是关于理解的。
规模和价值效应在不同市场和时间段普遍存在，但其幅度可能有显著差异。
The dinosaurs became extinct because they didn't have a space program. And if we become extinct because we don't have a space program, it'll serve us right!
在科学中，重要的不是获得新的事实，而是发现思考它们的新方法。
写作就是一场漫长的自我教育。