Theorems are eternal; their proofs are ephemeral.
定理是永恒的;它们的证明是短暂的。
I'm the reason your mama's so depressed.
全球性挑战需要全球合作。
法律在其庄严的平等中,禁止富人和穷人在桥下睡觉、在街上乞讨和偷面包。
I'd rather be a failed writer than a successful banker.