My Weight Training Coach, The Berserker, is a man whom I both enjoy and fear. He is a deep thinker and thoughtful man. He is dedicated to the practice of training and strength (over the period of about five years, he increased his mass - mostly muscle - from around 200 lbs. to somewhere around 315 lbs.) and passes that intensity to his workouts. I fear him because, well, he takes suffering in the form of workouts to a new level. But I can assure you, his suffering (even to me) has brought results.
So when he recommends a book for me to read, I read it.