A lion does not concern himself with the opinion of sheep.
狮子可不会在意绵羊是怎么想的。
As a sheep, you must run and keep alert.
It is said that soldiers who are fighting togehter often have a strong feeling of brotherhood, so can sheep who eat grass together can unite to combat against a lion?
We turn not older with years, but newer every day.
我们并非在年复一年地变老，而是日复一日地焕然一新。
From Emily Dickinson.
I wish it can be true.
Yesterday I wrote several small samples with Python3.5, their running outputs were nearly the same, and the difference may be the algorithms and the data-structre of them.
Then I found the time complexity of each realization was quite different.
The same is to life.
Our choice will decide whether our life will be easy or not.
August 30th 2017 Week 35th Wednesday
原文：http://www.cnblogs.com/dengwenwu/p/7835258.html