During yesterday class Shifu explained a famous gatha(verse) of "Diamond Sutra".
「若以色見我 以音聲求我 是人行邪道 不能見如來」
The rough English translation version of it.....
"Whoever saw me through forms or through sounds are on deviant paths
and will not be able to witness Buddha" -- Buddha
Buddha(Enlightenment) cannot be seen with naked eyes.