il lupo perde il pelo ma non il vizio

人の本性や根深い悪癖は、歳をとっても簡単には変わらないという意味のことわざ。 / 表面上どれだけ変わったように見えても、その人の根っこの性質や悪い習慣は残り続ける、という警句。

English Meaning

the wolf may lose his teeth but never his nature; a leopard cannot change its spots; the fox may grow grey but never good

Anche se l'uomo cambia, ricordiamo che il lupo perde il pelo ma non il vizio.

人は変わるかもしれませんが、狼は毛を失っても本性は変わらないことを忘れてはなりません。

Even though people can change, remember that the wolf loses its hair but not its vice.