"Sure, he is a world-class physicist
and is one of the world's leading voices regarding the relationship between science and faith. And sure, he mathematically explained the existence of quarks and gluons, got his Ph.D. in physics from Cambridge University, was knighted by the Queen for his efforts to develop ethical research standards for England's scientists, is a member of the Royal Society, was president of Queens' College, won the Templeton Prize, and wrote more than 30 books on the relationship between science and faith. But he doesn't really
Likewise, Polkinghorne doesn't know for sure that there is a God. And yet, when he was at the top of his game in physics at Cambridge in 1979, he left the laboratory studying one unseen reality for the seminary to study another unseen reality. He became a priest in the Anglican Church. In addition to believing that quarks exist, he believes in a God who is driven by love to continuously create a world that is beautiful. For him, the theories that have God in them work. But he doesn't really know for sure. And he's OK with that."
Epistemological humility: Who woulda thunk?