Answer:
Individuality.
Step-by-step explanation:
Don Quixote is a book that was well written by Miguel de Cervantes Saavedra; a famous Spanish writer. The book is based about the story of a man called Alonso Quixano, from La Mancha. In his bid to restore chivalry and serve his nation, Quixano became Knight-Errant, while trying to achieve his aim.
Hence, a new idea that Cervantes celebrates in Don Quixote is known as "INDIVIDUALITY"