In the end, we are all just stories, and it is up to us to make our stories worth telling.
Every challenge is an opportunity in disguise.
世界上最好和最美丽的东西是看不见甚至摸不着的——它们必须用心去感受。
I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection.  
民主是唯一能够反映人类精神不屈不挠追求自由的制度。