Some people don't like change, but you need to embrace change if the alternative is disaster.
Simple, sincere people seldom speak much of their piety; it shows itself in acts rather than words, and has more influence than homilies or protestations.
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。
If you want something said, ask a man; if you want something done, ask a woman.