Nee's so-called Biblical basis for believing in the latent power of the soul was shockingly speculative and lacking substantial warrant. He claims that Adam must have had supernatural powers, for how else could he have been able to tend to the Garden? On the basis of this reasoning Nee constructs the rest of his book, warning Christians about the latent power of the soul - supernatural powers - that still exists within all humans. Nee attributes the supernatural behavior of Hindus and Buddhists to this latent power of the soul, and states that while God created this power, we no longer have the warrant to utilize it, but Satan wants us to use it to further his ends. Needless to say, with a premise like this, the remainder of the book is chaotic.
Nee is typical of many "deeper life" writers in his day who quote Scriptures to make certain points, points which are out of context and actually alien to the entirety of Scripture. For some reason these writers were incapable of seeing what they were doing, and wrote with an air of authority which they thought stemmed from God's Word but did not.
Nee actually states that it is possible to pray toward people instead of God, and by simply concentrating on the desire for good or bad things to happen, they will in fact happen. He doesn't encourage us to do this, but states that it works. However, Jesus said, "Which of you, by taking thought, can add one cubit unto his stature?" (Matt. 6:27)
Nee has written some good books which shouldn't be discarded because of this one, but I would never recommend this book of his. It only serves to promote superstition.