Spirituality of Cheif Seattle: What's the deal?

We read Cheif Seattle's famous speech (How can one sell the air?) this week also. Big ups to Cheif Seattle, he was very visionary for his time. However, the piece about this that sparked the most curiosity was Seattle's spiritual influence. Here's an excerpt from my paper -- spirituality is something I've been mulling over a lot lately.

The context of American Indian spirituality very much intrigues me. I feel I know very little about it – beyond what we have heard about the Shaker religion and constant reference to Creator. I have assumptions based on my own schooling, however, I am not certain I have a full concept of American Indian religion. Often I wonder how many of the stereotypes I, too, have believed over the years. Seattle’s mention of religious themes thus becomes even more interesting. As a converted Catholic (p. 43), whose speech was translated by a playwright hired by Southern Baptist Radio (p. 35), presents even more fascination about Seattle’s religious positions. For example, he specifically mentions the idea that God does not love American Indians. “No, the white man’s god cannot love his red children or he would protect them. Now we are orphans. There is no one to help us” (p. 69). Yet, Seattle seems to entertain the possibility that we all share a common destiny: “Even the white man, whose god walked and talked with him, as friend to friend, is not exempt from the common destiny. We may be brothers after all. We shall see” (p. 24). This would be an area I would like further information on.