"History is not just about kings and queens; it's about ordinary people and their extraordinary lives."
局部和全局现象之间的相互作用是数论中反复出现的主题。
发现的兴奋感永远不会过时。
有时候你必须先迷失自己，才能找到任何东西。
煤炭的真正价值在于我们如何负责任地开采和使用它。
Everything that happens once can never happen again. But everything that happens twice will surely happen a third time.
每一本书都是通往另一个世界的门。
一纸文凭不见得就可以造就一个人，正如同牢狱生涯也不见得会打垮每一个人。