“Books are fatal: they are the curse of the human race. Nine- tenths of existing books are nonsense, and the clever books are the refutation of that nonsense. The greatest misfortune that ever befell man was the invention of printing.”

The Evolution of A Revolt (1920)
Context: Nine-tenths of tactics are certain, and taught in books: but the irrational tenth is like the kingfisher flashing across the pool, and that is the test of generals. It can only be ensured by instinct, sharpened by thought practicing the stroke so often that at the crisis it is as natural as a reflex.

Source: The Yellow-Lighted Bookshop: A Memoir, a History

Language Education in a Knowledge Context (1980)
Context: Of writing that is filled with mechanical and grammatical error, as compared with writing that conforms to the rules of standard edited English. Surely, we do not want to say that there is a necessary correlation between mechanical and editorial accuracy and intellectual substance. There are many books that are mechanically faultless but which contain untrue, unclear, or even nonsensical ideas. Carefully edited writing tells us, not that the writer speaks truly, but that he or she grasps... the manner in which knowledge is usually expressed. The most devastating argument against a paper that is marred by grammatical and rhetorical error is that the writer does not understand the subject.

Source: Cosmos

Variant: Books are... companions, teachers, magicians, bankers of the treasures of mind. Books are humanity in print.

Source: The Book Thief

Introduction to The Annotated Alice (1960) // The Annotated Alice. The Definitive Edition (1999), by Lewis Carroll (Author, Christ Church College, Oxford), John Tenniel (Illustrated by), Martin Gardner (Editor, Introduction and notes by), page viii
Context: The last level of metaphor in the Alice books is this: that life, viewed rationally and without illusion, appears to be a nonsense tale told by an idiot mathematician. At the heart of things science finds only a mad, never-ending quadrille of Mock Turtle Waves and Gryphon Particles. For a moment the waves and particles dance in grotesque, inconceivably complex patterns capable of reflecting on their own absurdity.

On Publishing
Writers at Work (1977)
Context: A book is like a man — clever and dull, brave and cowardly, beautiful and ugly. For every flowering thought there will be a page like a wet and mangy mongrel, and for every looping flight a tap on the wing and a reminder that wax cannot hold the feathers firm too near the sun.