Yesterday, Cindie and Walt discussed how Neville emphasizes "the power of assumption" in Chapter 3, in which he notes that everything that happens to us occurs as a result of our consciousness. This happens despite the fact that we usually attribute external circumstances rather than our own consciousness.
He follows this up by giving us some advice about how to focus consciously, which is to distinguish between mental and spiritual.
"You know a thing mentally by looking at it from the outside, by comparing it with other things, by analyzing it and defining it [by thinking of it]; whereas you can know a thing spiritually only by becoming it [only by thinking from it]," Neville writes. "You must be the thing itself and not merely talk about it or look at it."