I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection.  

Understanding is the first step to acceptance, and only with acceptance can there be recovery.

权力总是认为它有一个伟大的灵魂和超越弱者理解的广阔视野。

我越是研究自然，就越对造物主的工作感到惊奇。