Some food we had and some fresh water that
A noble Neapolitan, Gonzalo,
Out of his charity, being then appointed
Master of this design, did give us, with
Rich garments, linens, stuffs and necessaries,
Which since have steaded much; so, of his gentleness,
Knowing I loved my books, he furnished me
From mine own library with volumes that
I prize above my dukedom.

– William Shakespeare

The Tempest, Act 1, Scene 2. Prospero voices his love for and gratitude towards the "noble" Gonzalo, for all the help and necessities he provided for Prospero and Miranda in their move from Milan to the island. He furnished them with food, fine clothing and prized books from Prospero’s library, he tells her. The books would have included Prospero’s all-important magic books.