It is one of many and often clashing beliefs of mine that our brains must be an instrument. The reason I find myself figuring this is because I cannot even begin to understand what life is, and how it came to be. Try to imagine earth before life. There is nothing but rocks, mist and terrible weather. I have trouble even beginning to understand how independent life formed from gasses and electricity. But without the idea of life in your mind, can you explain the idea of the existence of life? This leads me to believe that there must be an outside plane of existence, and that life was placed here by this other plane. On this other plane existence is something that we cannot understand, or even exist in. We live in a world of three dimensions and five senses, but on this other plane, there is something that is not comprehendible with just five senses and three dimensions. This is why I believe that our "spirits" are of this extra plane, and that they can only live inside of bio-mass like the human body. When the body breaks, the "spirit" cannot exist in our plane anymore, so it transcends to the extra plane.

There is no real evidence for this... It is rumored that when living things die there is a white light, perhaps this is the spirit transcending when the being (its means of existence in our plane) breaks.

I have to assume that We are part of a bigger whole because we would all have spirits. This could explain the idea of a "soulmate". Maybe a soul mate is just when a person finds a person with like-spirits?