历史上最坏的罪恶往往都来自那些自以为是在打击罪恶的人。留心自己打击罪恶的想法。
The worst evils in history have always been committed by those who truly believed they were combating evil. Beware of combating evil.
You can't please everyone, so don't try.
There is only one boss. The customer. And he can fire everybody in the company from the chairman on down, simply by spending his money somewhere else.