The idea “all that glitters is not gold” was made common by William Shakespeare. <u>The expression comes from the idea that gold is one of the most valuable materials in the world, and that we can recognize it by its shine. </u>Yet, we have to be careful as not everything that glitters and shines will be made of gold. Therefore, the saying tries to warn us that<u> not everything that looks good will turn out to be precious at the end </u>and that we can easily be tricked into thinking something is worth more than it actually is. <u>The first sight of something will not determine its full value.</u>
