采石场经理需要工程师的精确和诗人的远见。

The past is a story we tell ourselves.

The most important challenge facing the world today is the need to create strong, effective, and accountable states in the developing world.

翻译：物极必反是自然规律，做人做事留一分余地，不追求极致完美，才能避免盛极而衰。

I think it's possible for ordinary people to choose to be extraordinary.

数学不知道种族或地理界限；对于数学来说，文化世界是一个国家。

记忆就像一面破碎成千片的镜子，然而每一片碎片都映照出完整的真相。

未来属于那些能够平衡短期表现和长期愿景的人。