每个问题都有两面性。
The past is a foreign country; they do things differently there.
An eye for an eye will only make the whole world blind.
一定要成功﹗我只以成败论英雄。
The process of doing mathematics is more important than the result.
冒比他人认为安全的更大的风险。梦想比他人认为实际的更多。
人类的声音是所有乐器中最完美的。