An ass1 once found a lion's skin which the hunters had left outin the sun to dry. He put it on and went towards his nativevillage. All fled at his approach, both men and animals, and hewas a proud ass that day. In his delight he lifted up his voiceand brayed2, but then every one knew him, and his owner came up andgave him a sound cudgelling for the fright he had caused. Andshortly afterwards a fox came up to him and said: "Ah, I knew youby your voice." 
Fine clothes may disguise, but silly words will disclose a fool. 