I've been reading
The Pursuit of God by AW Tozer. He wrote in the first half of the Twentieth Century. Brilliant spiritual writing. Challenging. Refreshing. Reading him via my Kindle App. A FREE download. If you haven't already checked out the FREE downloads from places like the Kindle store: there is plenty of "rough" but there are some diamonds out there as well. Including Tozer, Murray, Chesterton and other classic spiritual writers.