In the 1948 BBC Radio Debate between Bertrand Russell and Frederick Copleston, Copleston's position was that God's existence could be proven philosophically.[1] Russell's position was that of an agnostic (in the sense in which both he and Copleston understood the term) as he thought that the non-existence of God could not be proven.[3] Whether Russell was an agnostic or atheist is a question he had previously addressed in 1947.[4] Speaking with fellow philosophers, he had said, he would identify himself as agnostic.