"The truth is rarely pure and never simple."
不可以同井底的青蛙谈论大海的辽阔，因为有空间的拘束；不可以同夏天的小虫谈论冰冻的寒冷，因为有时节的局限。
Competition is a good thing, it forces you to keep improving.
PAC学习框架提供了一种形式化的方法来量化概念类的可学习性。
Pity, or compassion, is an emotion equally natural to all men.
Architecture is not just about constructing buildings, it's about creating spaces that inspire and transform human experiences.