I have had some conversations recently with someone who thinks that circular arguments are sometimes OK. And around the same time, the possible circularity of arguments attributed to Jesus in the Gospel of John came up in my Sunday school class. In John 8, Jesus is depicted as saying that his testimony about himself is essentially self-authenticating. This is all the more problematic because Jesus is depicted in chapter 5 as saying that if he testifies about himself, his testimony... Read more