We try to exert a Ted Williams kind of discipline. In his book The Science of Hitting, Ted explains that he carved the strike zone into 77 cells, each the size of a baseball. Swinging only at balls in his "best" cell, he knew, would allow him to bat .400; reaching for balls in his "worst" spot, the low outside corner of the strike zone, would reduce him to .230. In other words, waiting for the fat pitch would mean a trip to the Hall of Fame; swinging indiscriminately would mean a ticket to the minors.
To buy books would be a good thing if we could also buy the time to read them; but the purchase of books is often mistaken for the assimilation and mastering of their contents.
Nothing shakes my opinion of a book. Nothing -- nothing. Only perhaps if it's the book of a young person -- or of a friend -- no, even so, I think myself infallible.
If we are perplexed by an apparent contradiction in Scripture, it is not allowable to say, 'The author of this book is mistaken'; but either the manuscript is faulty, or the translation is wrong, or you have not understood.
There are two books laid before us to study, to prevent our falling into error; first, the volume of the Scriptures, which reveal the will of God; then the volume of the Creatures, which express His power.