When Allaah granted Prophet Yusuf (alayhi salaam) physical beauty, it caused him to be locked up in the prison. But when Allaah granted him knowledge (when he interpreted the dream of the king), it not only took him out of prison, but elevated his rank in society. Clearly showing us the virtue of knowledge and that physical beauty does not mean anything.

Ibn Al-Qayyim (Rh) [al-‘ilm wa fadhluhu wa sharafuhu p. 32]