The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.
生活的目的不是快乐。它是有用的，是光荣的，是富有同情心的，是让你活得有意义，活得好。
The search for exoplanets is not just about finding new worlds; it's about understanding our place in the cosmos.
将社会正义的梦想变为现实并不容易，但也不是不可能的。
We are all hostages of our own memories.