You are never too old to set another goal or to dream a new dream.
设定新目标或做新梦想永远不会太老。
数学的美在于它能够以最优雅的方式描述宇宙。
你不能让赞美或批评影响到你。陷入其中任何一种都是弱点。
I’ve learned to embrace my flaws, because they make me who I am.