Mathematics is the art of giving the same name to different things.
数学是给不同事物赋予相同名称的艺术。
Technology should serve people, not the other way around.
The only limits you have are the limits you believe.
《在广州石围塘检阅滇均的演说》(1924年4月4日)
The more I live, the more I regret how little I know.
语言是我们思想的镜子。
位置测量越精确,动量测量就越不精确,反之亦然。