Efficiency is highly overrated； Goofing off is highly underrated. Regularly scheduled sabbaths， sabbaticals， vacations， breaks， aimless walks and time off are essential for top performance of any kind. The best work ethic requires a good rest ethic.

谈低调

The only thing that stands between a man and what he wants from life is often merely the will to try it and the faith to believe that it is possible.

测试程序的最好方法是测试它。