Every mathematical problem is a window into a deeper understanding of the world.
The dog is a friend of man because it judges him not by his station.
The most damaging phrase in the language is: 'It's always been done this way.'
过去是你记得的、想象你记得的、说服自己记得的或假装记得的东西。
真正的创新发生在你走出舒适区的时候。