別太常跟同一個敵人打仗，否則你將教會他你的所有戰術。You must not fight too often with one enemy, or you will teach him all your art of war.

別太常跟同一個敵人打仗，否則你將教會他你的所有戰術。
–法國軍事家 拿破崙 (Napoléon Bonaparte)
You must not fight too often with one enemy, or you will teach him all your art of war.