And finally, one must consider how great the ease of learning
there is in books, how yeilding, how trusty!
How safely we reveal, without shyness, in the face of our books
the poverty of our human ignorance!
They are teachers who instruct us without switches or rods,
without slaps or anger, without notice of rags or riches.
If you approach them, they are not asleep;
If you ask a question, they do not hide;
They do not mutter at you if you make a mistake;
When you are ignorant, they do not know how to laugh at you.Richard de Bury (Philobiblion, I, 9)