Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
Behavior, as such, is not to be regarded as a mere chain of muscular contractions, but rather as a purposive and cognitive affair.
科学是一种探索未知的冒险,每一次发现都是对自然的一次新的理解。
The role of a leader is not to have all the answers, but to ask the right questions.