数学不是一项观赏性运动。你必须参与其中。
社会正义的首要组成部分是全人类都有足够的食物。
海洋不仅仅是一种待开发的资源，更是我们必须为子孙后代保护的脆弱生态系统。
The first man who， having enclosed a piece of ground， bethought himself of saying 'This is mine，' and found people simple enough to believe him， was the real founder of civil society.
The most powerful brand in the world is trust.
"Sometimes, you have to be apart from people you love, but that doesn't make you love them any less. Sometimes, it makes you love them more."