If you think it's expensive to hire a professional to do the job, wait until you hire an amateur.

If you think it's expensive to hire a professional to do the job, wait until you hire an amateur.

如果你认为雇佣专业人员做这项工作很贵，那就等到雇佣业余人员吧。

-- Red Adair 雷德·亚戴尔