I don't think you can ever really prepare for the loss of someone you love.
There is only one good, which is knowledge, and one evil, which is ignorance.
释义:失败了不要总陷入后悔中,不能错失机会。  
自由民主制度可能并不完美,但它是我们拥有的最好的制度。
The laws of physics are the same everywhere in the universe.
Diplomacy is not only about the affairs between nations, it also concerns the fate and future of humanity as a whole.