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.
They can not break me . The only way to break me is to kill me.
精神生活是对环境的持续调整。
"The only true wisdom is in knowing you know nothing."
Never give up. Today is hard, tomorrow will be worse, but the day after tomorrow will be sunshine.
It's not about having time, it's about making time.