Definition of "book learning"

What you needed, I reckon, was less book learning and more bread-and-butter learning.

1892, Mark Twain [pseudonym; Samuel Langhorne Clemens], chapter XI, in The American Claimant, New York, N.Y.: Charles L[uther] Webster & Co., page 117

Harry's education has included book learning and practical learning, but he's been absorbing the lessons of the heart as well—kindness, courage, loyalty, and the virtue that Dumbledore places above all others: love.

2005 July 18, Alexandra Mullen, “Book Review: Harry, Conquering Hero”, in New York Sun, retrieved 31 Aug. 2010