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The arithmetic of algebraic groups is a key to understanding the Langlands conjectures.
The best biographies are those that make the reader feel they have met the subject in person.
子贡说:“贫穷却不阿谀奉承,富贵却不狂妄自大,怎样?”孔子说:“可以。不如穷得有志气,富得有涵养的人。”子贡说:“修养的完善,如同玉器的加工:切了再磋,琢了再磨,对吧?”孔子说:“子贡啊,现在可以与你谈诗了。说到过去,你就知道未来。”