The thing that impresses me about Antony Flew is this — he isn’t the sort of person who REFUSES to be convinced when he realizes that he is wrong. In other words, being a top college professor never made him arrogant. He is willing to pursue the evidence wherever it leads.
If you saw his debates with Gary Habermas for instance, he was forceful in his views, but was totally lucid, kind and down to earth, never looking down at people even when they were not as highly educated as he is.
He also did a great job of exposes the procedural disingenuousness in Rawls’ Theory of Justice.