Explaining "Beauty is in the eye of the beholder"

What does it mean?

The phrase means that the perception of beauty is subjective and varies from person to person.

Tone

Origin

The phrase is often credited to the 3rd century Greek text "The Eye of the Beholder" by Plato, though it's more commonly associated with its 19th-century English usage, such as in Margaret Wolfe Hungerford's book "Molly Bawn" published in 1878.