凡战之道,用寡固,用众治;寡利烦,众利正。用众进止,用寡进退。众以合寡,则远裹而阙之;若分而迭击,寡以待众;若众疑之,则自用之。擅利则释旗,迎而反之。敌若众,则相众而受裹。敌若寡若畏,则避之开之。...