烏鴉夢想自己也能擁有和天鵝一樣潔白美麗的羽毛。他猜想，天鵝的羽毛之所以那麼潔白，一定是常常洗澡的原因。於是，他決定離開賴以生存的祭壇，搬到江湖邊居住。他每天清洗自己的羽毛，可是不僅羽毛沒有洗白，反而因為缺少食物而餓死了。
天生的東西是不會隨生活方式的改變而改變的。
A Raven saw a Swao seself the same beautiful plumage. Supposing that the Slendid white his washier ihe Ravears in the neighborhood where he picked up his living，and took up residehe lakes and pools. But g his feathers as often as he would，he ot ge their color，while through want of food he perished.
ge of habit ot alter Nature.