Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。
The world is full of people whose notion of a satisfactory future is, in fact, a return to the idealised past.
A philosophical problem has the form: 'I don't know my way about.'
Success comes from focusing on what you can control and letting go of what you can't.
世界是一幅伟大的画，我们是其中的色彩。