1）Something attractive is not always what it seems,as in This house is really beautiful,but a close look will show dry rot near the foundation—【all that glitters is not gold】.Aesop stated the same idea in two of his fables (c.600 b.c.),and a version close to the current wording appeared in 1175.
2）The title line of the song,which essentially means "Everything that seems exciting or beautiful is not necessarily great or valuable",comes from the William Shakespeare line from The Merchant of Venice,"All that glisters is not gold; often have you heard that told." This in turn was a translation of a Renaissance-era Italian saying,which probably alluded to an ancient Greek fable attributed to Aesop
从以上解读看,该英语谚语的来源是《伊索寓言》.后来莎士比亚在《威尼斯商人》里使用了.
