From the podcast, we see how Emerson sets the soul apart from everything else, calling that stuff Nature.
We can identify with the souls, and how it reacts to these other things we observe. Not only do we act towards nature, we react to it as well. Emotions play a big part in our views of nature, from the "Awww" of a sunset to the passion in an Irish landscape to the view of the Grand Canyon as the sun peaks the horizon.
This intertwined relationship is best stated by Emerson: "Yet it is certain that the power to produce this delight, does not reside in nature, but in man, or in a harmony of both."