Who said "Beauty that is merely skin-deep is but a shadow on a wall."?

This quote is attributed to Diogenes Laërtius.

Beauty that is merely skin-deep is but a shadow on a wall. - Diogenes Laërtius

"Beauty that is merely skin-deep is but a shadow on a wall."

Diogenes Laërtius Beauty

Historian Biographer Ancient Greece

"The man who is not afraid of the sea will soon be drowned, for he will be going out on a day he shouldn't."

"It is not that the man has failed, but that he aimed at nothing and succeeded."

"Know yourself."

"The foundation of every state is the education of its youth."

"Beauty comes in many forms."

"Beauty comes from within."

"True beauty lies in authenticity."

"Beauty exists in the most unexpected places."