Excellent! I actually have a similar personal belief. It's similar to the "trinity" of mind, body, and soul: the soul is perfect and eternal and unique, and the mind and body are the balancing factors which allow it to exist. I work to perfect my mind and body and therefore strengthen my soul. The segment I quoted are pretty much EXACTLY what I tell myself when I need reminding
You may also find the beliefs of Rastafari interesting. They say "There is no You and I, only I and I" meaning that language can contribute to an illusion of seperateness and that man-and-womankind are really ONE (capitalized for emphasis) entity. And it's true: selfishness and greed cause strife, and unity and brotherliness are productive to the "self" and others. It's mind-blowing to actually imagine the implications of true unity!
Yoga is also a striving towards "one-ness," and before someone who says "yoga is for skinny flexible guys blah blah blah" keep in mind that some yoga is not even about bodily contortions, it's mental/spiritual. I enjoy the physical contortions as well, because "By contorting one's body to resemble the many forms in nature, one realizes the holiness and the breath of God that is present in everything living and inanimate" (to quote BKS Iyengar)
I am also currently studying the Akan people of West Africa, who are extremely committed to a unified social structure. I actually feel rather cheated that we are so "individualistic" in the US. The Akan also have very interesting beliefs in death and the stages of life one goes through, just tell me if anyone wants to discuss further.