“Theology is poetry plus, not science minus.”
The "plus" lies in the fact that theology makes truth claims concerning the practice of life and what is sacred. Of course poetry does too, but theology usually couples the aesthetic, abstract claims of art and philosophy with a concrete lifestyle program to be enacted.
Valid faith claims lie in the realm of axiomatic premises about what is good. They lie outside the realm of provability and at best point us to the limitations of human knowledge with a sense of hope and wonder. Religions are man-made symbolic systems to attempt communication and deeper understanding of this hope and wonder. Unfortunately these symbols often become the truth themselves for millions of people instead of remaining the humble, flexible signposts pointing to truth that they are meant to be. While I feel strongly about naturalism, or at least if there is anything supernatural I feel strongly that we cannot successfully argue for it logically without severe ad hoc constraints asserted onto the supernatural, naturalism describes the past up to this point. It also provides us with the materials we have to make decisions. Yet it does not inform us of what exact decision we should make in any given circumstance.
For that it seems we need a “plus”. Religion is not necessary, of course, but it is a language that can sometimes help us discuss and think through our experience of existence. At its best it is "poetry plus."
And theology is certainly capable of being “science minus”. This happens when religious discussion, meant to provide a language to describe the indescribable, is used to make concrete scientific claims. It’s when we claim to know things, objective things, that we don’t really know, except perhaps in our non-objective (and lovely) hearts.