It's all just math.
I think he’s saying that there are GOOD REASONS for faith, not that faith is unnecessary.
I think he’s saying that there is a mathematical structure beneath the rest of the story; rather like the steel beams that hold up a building against gravity. Those beams aren’t the whole building or the thing people see when they look at the building or use many of its facilities.
exp(pi()*i) + 1 = 0, donc Dieu existe, respondez!
That’s the way I learned it in college anyway. It appears that (a + b^n)/n = x is a much more common version of the legend. (Euler and Diderot).