By three methods we may learn wisdom: first, by reflection, which is noblest; second, by imitation, which is easiest; and third, by experience, which is the bitterest.
—Confucius
通过三种方法，我们可以学到智慧：首先，通过反思，这是最高尚的；其次，通过模仿，这是最容易的；第三，根据经验，这是最痛苦的。孔子（谷歌翻译仅供参考）