萬里修書只為牆，讓他三尺有何妨？ 長城萬里今猶在，不見當年秦始皇。 ──明‧林瀚〈誡子弟〉
A petition from ten thousand miles away, just for a wall, Why not yield three feet, after all? The Great Wall still stands, ten thousand miles long, Yet, where is the Emperor Qin, once so strong? -- Lin Han, Ming Dynasty, "Admonishing Disciples"