Quantum Physics and Life

I found this excerpt in a physics blog that I read. Scientists have been trying to explain the difference between non-living matter and living things. When does something become "alive"? What makes it alive? Quantum mechanics has been used for half a century to explain that. So far the attempts have been futile.

Here is a quote from the article by Paul Davies:
[Half a century later, the dream that quantum mechanics would somehow explain life “at a stroke” — as it had explained other states of matter so distinctively and comprehensively — has not been fulfilled. Undoubtedly, quantum mechanics is needed to explain the sizes and shapes of molecules and the details of their chemical bonding, but no clear-cut “life principle” has emerged from the quantum realm that would single out the living state as in any way special. Furthermore, classical ball-and-stick models seem adequate for most explanations in molecular biology.]

I think science is wonderful, yet so much of it is used as an excuse to figure out the universe and life without God. Things will never be explained by science alone. We can't use supernatural beliefs in the scientific method since they can't be proven. Yet, there are so many things that can't be completely explained. Someone made us and the world we are in. That's the only way to explain the source of life.