The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

I do not wish them [women] to have power over men; but over themselves.

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

未来甚至对创造它的人也隐藏着。

在安静中观察世界，在闲暇中修炼心性。

最好的企业不只是销售产品；它们解决问题。