"Hakuna Matata!"
This phrase, meaning "no worries" in Swahili, is a central theme of the film and a reminder to live life without stress.
Other famous lines from The Lion King include:
* "I just can't wait to be king!"
* "Everything the light touches is our kingdom."
* "There's a great big beautiful tomorrow."
* "Be prepared!"
* "Remember who you are."
* "Simba, you're my son."
Which line you consider the most famous depends on your personal preference!