Books are alive and have souls.  We found these proofs:

"Undoubtedly books have souls" (Joseph Jewell Barton).

"Literature … is alive—not in a vague complementary sense, but alive tenaciously" (E. M. Forster).

"Only an honest book can live" (John Burroughs).

"Literature is alive.  I am literature; it's not merely dead authors with beards.  It's alive" (Azouz Begag).

"Words have souls, and books have souls, and books, indeed, contain the most valuable essence of human souls" (The Open Court, 1894).

It's been said that "it's an author's passion, whatever its form … that makes a pulse beat in the printed page and keeps a book alive through its readers long after the writer is dust" ("The Book" by Barbara W. Tuchman).

It's been said that "the jumping out of planes, car chases and evil people in general is what I think keeps a book alive" (Scorpia, in a book review).

It's been said that "richness and impact characterize the lasting works" so that fifty years after their first appearance they still grip the human mind, immersing it in a rich created world.  (Kathryn Cave.)

It's been said that "It is the revelation that keeps a book alive to the reader" (Adrianne, "The Book and the Real World").

It's been said that references to famous quotations, events, and artworks is what keeps a book alive (Christchurch City Libraries).

It's been said that "It's the critical culture that keeps a book alive" (Yamini Deenadayalan).

It's been said that "it's word of mouth that really keeps a book alive" (Laura Lam).

It's been said that "What keeps a book alive is future books talking about it" (Tom Vanderbilt , "Why Is Literary Fame So Unpredictable?").

It's been said that "What keeps a book alive is not the judgment of critics, not the label of 'classic' attached to it in school-rooms, but the unaffected delight it continues to give to the hearts of men" (H. W. Boynton, "Reading New Books").

It's been said that "it is teaching that keeps a book alive" (Nicholas Birns).

It's been said that "It is only the good opinion of the few that keeps a book alive" (Max Beerbohm).

It has been said that it is the "calling for fresh copies of it after the old copies are worn out" that keeps a book alive (Leon Henry Vincent, The Bibliotaph).

It's been said that "humor that survives from other days" keeps a book alive beyond its own generation (Ladies' Home Journal).

It's been said that "credibility among [the author's] scientific peers" is what keeps a book alive in the minds of readers (Cheryl Knott).

It's been said that "a popular adaptation keeps a book alive" (Thomas S. Hischak).

Previously, we saw that the moment a work is published it appears in another world (either heavenly or hellish.  Bad books are tormented in Hell.)