The troublesome quote would be in the very start 'Emotion is as wild and unpredictable as the weather and must be faced and domincated. No no wonder ancients called it the devil. . .' a quote which would seem to deny their influence on such matters, as an antiquated idea. Later on the work might correct this impression, but in the few pages of the preview, that would be against the work.
I don't have the time or capability to read every book sufficiently to say whether there are problems with it, or it is recommendable generally.
So my general advise is to always go to the books of the saints for reading, one won't run out of them to read.
And one will escape a good deal of things one shouldn't have anything whatsoever to do with, and likely might not even know how to tell if is good or evil.