David on Existence of God

“Debates about the existence of God are interminable (...) In my view, though, the persistence of this debate is not surprising for one reason only: the depth of the widespread human need to cope with the harsh realities of the human predicament, including but not limited to the fact that our lives are meaningless in important ways. Upton Sinclair famously remarked that it “is difficult to get a man to understand something when his salary depends upon his not understanding it.” It is similarly difficult to get somebody to understand something when the meaning of his life depends on his not understanding it.”

“The fantastic 12-digit agreement between the theoretical predictions of QED and the experimental results is a miracle. It would be good for physicists to acknowledge the unsatisfactory mathematical structure of this prediction. It starts from a mathematically undefined Feynman Integral, proceeds by making many very complicated manipulations, and ends up with a formal series that Dyson showed to be divergent! Physicists think of it as an asymptotic expansion, but they have no mathematical proof of this. I often joke that this agreement of theory and experiment is a new proof of the existence of God and that she loves physicists!”