Are there any surviving writings that go into detail about the specific reasons that inspired people from classical antiquity to convert to Christianity, in contrast with remaining, for instance, Platonists? It always surprises me that a civilisation with predominantly ideologies based on reason and logic could suddenly switch to a predominantly faith-based religion. Platonism, for instance, has always gone to extreme lengths to completely lay down all the arguments in favour or against a certain ideological position, and when studying the history of Christianity it feels like i've missed certain writings of early converts that fully explain their new-found conviction in the teachings of Jesus and the apostles.