"Another year gone!" Dumbledore said cheerfully. "And I must trouble you with an old man's wheezing waffle before we sink our teeth into our delicious feast. What a year it has been! Hopefully your heads are all a little fuller than they were... you have the whole summer ahead to get them nice and empty before next year starts...."

Harry Potter and the Philosopher's Stone - Chapter 17 : The Man with Two Faces
See this quote in the Pensive -