"The world is indeed full of peril, and in it there are many dark places; but still there is much that is fair, and though in all lands love is now mingled with grief, it grows perhaps the greater."

没有事情的时候，需要照管这颗心，小心谨慎，好像有事一样；有了事情的时候，却要放下这颗心，泰然自得，好像没事一样。没有事情能像有事一样提防，才可以平息意想不到的变故；有了事情能像无事一样镇定，才能消除事件过程中的危机。

成功研究的关键是跨学科的合作和知识共享。