handsome is as handsome does

Translations
красив не тот, кто красив снаружи, а тот, кто красив в поступках
He may look good, but handsome is as handsome does.
Он может выглядеть хорошо, но красив не тот, кто красив снаружи, а тот, кто красив в поступках.
Definitions
This phrase suggests that a person's true character and actions are more important than their physical appearance. It implies that being 'handsome' or attractive is determined by one's behavior and how they treat others, rather than just their looks.