-We are one with nature, not separate, and are owned by the Earth, not the other way around.
It makes sense. Though Western European values brought about the concept of "owning the land," in all fairness, we are at the mercy of the Earth. It gives us food, water, air (though deforesting is getting rid of that day by day), and even the oil which we seem to so desperately depend on (and the process that creates oil takes thousands of years and we're going to use it up faster than the Earth can make it). Anything that happens in nature affects us. Therefore, we are one with nature (though human beings seem to have forgotten that).
-The concept of "God" is within us all, in plants, animals, even rocks and the air.
The concept of "God" is what connects us, aside from physical aspects, to the world around us. And since we are one with nature, that concept of "God" is in everything. And I say "concept" to refer to anyone's belief in a higher/underlying power.
-Souls are reincarnated in a near endless cycle until one reaches full enlightenment
There are practices of past-life regressions through hypnotism, meditation, and such. Also, there is one story I saw on the Discovery Channel a few years back. There was a child in India (or the Middle East, I forget where) who was born at the exact same instant a man was shot in the head, and the child was born with a birthmark with the same shape and in the same location as the man's bullet wound. The child also inexplicably has that man's memories, as confirmed by the man's mother who went to visit the boy.
-On that note, I believe that those who reach that full enlightenment become guides for all others.
I think that would be why some people who have near death experiences only see SOME of their dead relatives. Those are the ones that have reached that full enlightenment and don't need go back and learn.
-The acquisition of a higher consciousness will lead to peace.
If people just understand that every other human being is the same and that every religion (or scientific outlook) is the same thing: an attempt to explain the world and the life within it, there would be no need to point fingers, nobody to blame for anything. People would realize that nobody is better than anybody else and, therefore, nobody has any right to judge.
-Everything in the world must be in balance. Evil is what happens when there is an imbalance.
Hmm, in hindsight I phrased that incorrectly. I meant that bad things (not necessarily 'evil') happen when there is an imbalance. For example, China is extremely overpopulated, so they've been trying to limit people to only one child. However, because Chinese culture favors boys over girls, they tend to kill their girls so as to have only a boy child. Naturally, this causes problems later on, as the whole of China will become a sausage-fest.
-All religions are different takes on the same thing, so we must not deny the POV of others (though we can ignore those who deny ours)
Umm . . . because it's true? Every culture tries to come up with ways to explain that which cannot be fully understood by the human mind. Just as science by itself can't explain everything, a single religion by itself can't explain everything either. Just like in the academic world, "You need multiple sources."