《吴子·论将》
战车的轮轴插销要做得坚固，船只的橹、桨要做得适用，士卒要熟习战阵，马匹要熟练驰骋，这就是充实力量的关键。
车坚管辖，舟利橹楫，士习战陈，马闲驰逐，是谓力机。
The linchpins of the chariot wheels must be made sturdy, the oars and paddles of the boat must be made suitable, the soldiers must be familiar with the battle formations, and the horses must be skilled at galloping. This is the key to building up strength.