Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
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。
领导力在外交中起着重要作用，良好的领导能够带领团队应对复杂的国际挑战。
Civilization is a stream with banks. The stream is sometimes filled with blood from people killing, stealing, shouting and doing the things historians usually record, while on the banks, unnoticed, people build homes, make love, raise children, sing songs, write poetry and even whittle statues. The story of civilization is the story of what happened on the banks.
