You can't solve a problem? Well, get down and investigate the present facts and [the problem's] past history! When you have investigated the problem thoroughly, you will know how to solve it.
Mao ZedongIn general, any form of exercise, if pursued continuously, will help train us in perseverance. Long-distance running is particularly good training in perseverance.
Mao ZedongWhen guerillas engage a stronger enemy, they withdraw when he advances, harass him when he stops, strike him when he is weary, pursue him when he withdraws.
Mao Zedong