is a book
El Corán es un libro muy interesante.
The Quran is a very interesting book.
El mundo es un libro y cada paso abre una página.
The world is a book, and every step opens a page.
Each person is a book.
It's a great book.
Todo lo que tengo es un libro.
All I have is a book.
It's a children's book.
Es un libro demasiado extenso como para que yo lo lea en una semana.
It's too long a book for me to read in a week.
It is a Spanish book.