Man, unlike any other thing organic or inorganic in the universe, grows beyond his work, walks up the stairs of his concepts, emerges ahead of his accomplishments.

I believe that man will not merely endure: he will prevail. He is immortal, not because he alone among creatures has an inexhaustible voice, but because he has a soul, a spirit capable of compassion and sacrifice and endurance.

发现可能性的极限的唯一方法是超越它们进入不可能。

——2003年10月13日在联合国国际电信联盟(ITU)大会上发言

数学不是一项观赏性运动。