《庄子·外篇·刻意》
走向山林湖泽，处身闲暇旷达，垂钩钓鱼来消遣时光，算是无为自在罢了；这样做乃是闲游江湖的人，是逃避世事的人，正是那些闲暇无事的人所一心追求的。
就薮泽，处闲旷，钓鱼闲处，无为而已矣。此江海之士，避世之人，闲暇者之所好也。
Going to the mountains, forests, lakes, and marshes, staying in leisure and tranquility, and spending time hanging a hook to fish, one has to be carefree and at ease; doing so is about people who wander around the world and those who escape from worldly affairs, which is exactly what those who are carefree and have nothing to do focus on.