This is where faith comes into play. As a Christian who has puzzled the existence of God and It's nature, I've read a lot on the subject. But the more I try to categorize and analyze and compartmentalize, the more confused I get.
I finally stopped investigating. I know that I have a strong and solid connection with my HP, whom I call God. My faith takes me to places no amount of scientific evidence could.
Read C.S. Lewis's book, The Case for Christianity. That is, if you want to! It has helped strengthen my faith.