Your choice of words is very interesting ! I like that formula ! Religion is indeed for the most part closer to a philosophy of life than an absolute truth. I think that the more religious people tend to adhere to that point of view the more tolerant they are in regards to other beliefs or philosophies of life.
Unfortunately, It is my understanding that religious people who take everything literally without any "lateral thinking" or openness to metaphorical interpretations are those who are the most at risk to fall into fanaticism and intolerance.