True innovation happens when you question the assumptions everyone else accepts.

"The act of writing is an act of courage, a confrontation with the self."

It is futile to demand an a priori proof of the existence of objects which are not immediately ‘given’.

世界是一个非常复杂的地方，而且它并没有变得简单。

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