I study and learn from the bible. It is what God gave me to live by. If you ask a question about the bible I will give you an answer from the bible. If someone asked a question about history you would most likely have to get it from a book of some sort. What is our own intelligence and thoughts...
I quit and I haven't officially started smoking again. Once in a while I will have one if I'm around someone who smokes and they offer but I don't need to. I didn't while I was breastfeeding though. That's terrible.