Paul visits Athens and while there he goes to the Areopagus, the place where the Athenians would meet to talk and debate about life. Paul uses their own reasoning to debate with them but they laugh at him. At the end of the story Paul leaves for Corinth.
Corinth was a bit like Soho in London, city of ill repute, a sea port with all the things that go with a sea port. But the people of Corinth listen to Paul. They heard the good news and knew it was true. The smart people don't need the good news. Their pride stops them from hearing it as applied to themselves, they are too good and too smart to need God. You never hear of Paul's letters to the Athenians! But Corinth, the city of sinners, was open to the message and heard the Word of God. Does it ring any bells in today's world?