It is not about striving for immortality, but about accepting mortality.

“I've never stunned anyone except in our D.A. lessons," said Luna, sounding mild…”

“You will also find that help will always be given at Hogwarts to those who ask …”

“and of course a bit of whoever we want to change into.” “Excuse me?” said Ron s…”

“Just because it’s taken you three years to notice, Ron, doesn't mean no one els…”