感知的动态受“完形律”（良好形式）原则支配。
Certification is the grammar of responsible forestry.
"You can't go back and change the beginning, but you can start where you are and change the ending."
你无法回到过去改变开头，但可以从现在开始改变结局。
The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.
Continuous learning is the only way to cope with rapid technological changes.
Intelligence is what you use when you don't know what to do.