I was going to post something similar earlier. I was put off by what I perceived as a very condescending tone in the essay. I got the impression that the author envisioned his audience as children, or unintelligent adults.
Well to be fair, if you're the type that is sure that you can simply will your beliefs into becoming reality (preferably without recognizing the concept of reality), then you almost certainly fit into one of those two groups.
The essay is not about willing beliefs into reality, it is about showing the relationships between our beliefs and reality and how the former should be based on the latter. Or to put it in another way that a true statement is a statement that corresponds to what is going on in the real world.
(for the record, I haven't re-read this essay in a long time, there might be some sort of a revision done on it, but I doubt that much has changed)