This is considered to be one of the classic books in all of Christendom. Tozer wrote it to address what he felt was the problem of the day - people pursuing programs and theological knowledge rather than God.
But how do you pursue God? In this excellent book Tozer lays out keys to creating a real experential life with God. One that looks more like the life of a prophet - who reports what he sees and/ or hears, than a scribe. ( A scribe writes about what he read.)
We want to be talking about what we've seen of God / experienced with Him.