Newberg in Why god wont Go Away

"A skeptic might suggest that a biological origin to all spiritual longings and experiences, including the universal human yearning to connect with something divine, could be explained as a delusion caused by the chemical misfiring of a bundle of nerve cells. But …After years of scientific study, and careful consideration of the a neurological process that has evolved to allow us humans to transcend material existence and acknowledge and connect with a deeper, more spiritual part of ourselves perceived of as an absolute, universal reality that connects us to all that is."(p10)

"…Tracing spiritual experience to neurological behavior does not disprove its realness. If God does exist, for example, and if He appeared to you in some incarnation, you would have no way of experiencing His presence, except as part of a neurologically generated rendition of reality. You would need auditory processing to hear his voice, visual processing to see His face, and cognitive processing to make sense of his message. Even if he spoke to you mystically, without words, you would need cognitive functions to comprehend his meaning, and input form the brain’s emotional centers to fill you with rapture and awe. Neurology makes it clear: there is no other way for God to get into your head except through the brain’s neural pathways. Correspondingly, God cannot exist as a concept or as reality anyplace else but in your mind. In this sense, both spiritual experiences and experiences of a more ordinary material nature are made real to the mind in the very same way—through the processing powers of the brain and the cognitive functions of the mind. Whatever the ultimate nature of spiritual experience might be—weather it is in fact an actual perception of spiritual reality—or merely an interpretation of sheer neurological function—all that is meaningful in human spirituality happens in the mind. In other words, the mind is mystical by default."(p37)