英语寓言故事-The Kites and the Swans

TEE KITES of olden times, as well as the Swans, had the privilege
of song.  But having heard the neigh of the horse, they were so
enchanted with the sound, that they tried to imitate it; and, in
trying to neigh, they forgot how to sing. 


The desire for imaginary benefits often involves the loss of
present blessings.