“They didn’t know who they were.” This is how Hilary summed up the problem with the Arian heretics of the fourth century. Hilary, on the other hand, knew very well who he was — a child of a loving God who had inherited eternal life through belief in the Son of God. He hadn’t been raised as a Christian but he had felt a wonder at the gift of life and a desire to find out the meaning of that gift. He first discarded the approach of many people who around him, who believed the purpose of life …