The novels and poems are pure passionate experience.

These "pollyanalytics" are inferences made afterwards, from the experience.
And finally, it seems to me that even art is utterly dependent on philosophy: or if you prefer it, on a metaphysic.

The metaphysic or philosophy may not be anywhere very accurately stated and may be quite unconscious, in the artist, yet it is a metaphysic that governs men at the time, and is by all men more or less comprehended, and lived.

Men live and see according to some gradually developing and gradually withering vision.

This vision exists also as a dynamic idea or metaphysic--exists first as such.