Theorems are eternal; their proofs are ephemeral.
定理是永恒的；它们的证明是短暂的。
I don't compete with anyone but myself. My goal is to be better than I was yesterday.
We can easily forgive a child who is afraid of the dark；the real tragedy of life is when men are afraid of the light.
最好的研究是由好奇心和必要性共同驱动的。
Every story is a lie, but some lies are truer than others.
万卷仙经的教义总归相同，金丹大道才是根本宗旨。