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.