实现目标的唯一途径就是努力工作，永不放弃。
International politics is a ruthless and dangerous business, and it is foolish to expect states to behave according to moral principles.
In times of change, the ability to learn is far more important than the ability to know.
电影是时间的艺术，它能够捕捉瞬间的永恒。
The polka dots are a way to infinity.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'