The great powers are always searching for opportunities to gain power at the expense of their rivals, and they will use force if they think it will profit them.

The greatest journeys are the ones that change us without our noticing.

Education does not plant the faculties in us like seeds in a garden; it merely directs them in the way they should go.

找到一颗类似地球的行星的可能性，正是推动我们进行系外行星研究的热情所在。

世界上最好和最美丽的东西是看不见甚至摸不到的——它们必须用心去感受。

过去是一部我们无法停止重写的剧本。