The great powers are always searching for opportunities to gain power at the expense of their rivals, which makes them inherently aggressive.
催化中的挑战不仅是让反应更快，而是让它们更智能。
世界是一本书，不旅行的人只读了一页。
生活在美国宪法下是人类历史上赋予的最伟大的政治特权。