For something,we can't understand when we are young but by the time we understand,we are no longer young. 有些事情，当我们年轻的时候无法懂得，当我们懂得的时候已不再年轻。
You can learn from people, and educate others, but the only one you can change is yourself.你可以学习别人，也可以教育别人， 但是你唯一可以改变的人，是你自己。
Sometimes you need to look back, otherwise you will never know what you have lost in the way of forever searching. 偶尔要回头看看，否则永远都在追寻，而不知道自己失去了什么。
To go beyond is as wrong as to fall short. 过犹不及。
