Theorems are the permanent literature of mathematics.
流放不僅僅是地理問題；它是一種心境。
我們內(nèi)心都有意想不到的潛力，當(dāng)生活考驗我們時才會顯現(xiàn)。
我是個戰(zhàn)士，我是個奮斗者，我是個幸存者。
Sustainability is not just a buzzword, it's our responsibility.
The biggest risk is not taking any risk.