A FROG once upon a time came forth from his home in the marsh and proclaimed to all the beasts that he was a learned physician, skilled in the use of drugs and able to heal all diseases. —
从前，有一只青蛙从沼泽中出来，宣称自己是一位博学的医生，精通药物，能治愈一切疾病。 —

A Fox asked him, “How can you pretend to prescribe for others, when you are unable to heal your own lame gait and wrinkled skin?’
一只狐狸问道：“既然你自己都不能治愈自己的跛脚和皱皮，你怎么能假装给别人开药方呢？”