"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding."

Problem solving is a search through a space of possible solutions.

The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.

The quality of your life is the quality of your relationships.

The secret to success is to keep moving forward.

The historian will tell you what happened. The novelist will tell you what it felt like.

晏子春秋

Science is a journey, not a destination.

最伟大的定理往往来自于对显而易见之事的质疑。