Art and spirit

1.  Why is color so intimately tied to "spirituality", for Kandinsky?  What does Kandinsky say about that himself in the book, on the spiritual in art? Feel free to quote from the book. (see attachment)

2.  How does color in Kandinsky interact with form to foster special kinds of non-representational effects that allow us to see the universe entirely differently? You may be inspired by watching this video of Kandinsky's major art works (with no commentary) and musical background.  See if you can see by meditatively gazing at his paintings how his theory of "the spiritual in art" is manifested in them? (used the video) 

https://www.youtube.com/watch?v=Us-UupN7wHI