A good mathematician should be both rigorous and imaginative.
优秀的数学家应该既严谨又富有想象力。
心理学家必须避免一切形而上的假设。
All the greatest gains in life — in wealth, relationships, or knowledge —come from the magic of compounding interest — amplifying small steady gains. All you need for abundance is to keep adding 1% more than you subtract on a regular basis.