The Big Conversation - Episode 4 | Season 4

Why do people convert to belief in God? Is it rational do so?

Graham Oppy is Professor of Philosophy and Associate Dean of Research at Monash University, Australia and a well-known atheist thinker and author. He engages with Guillaume Bignon a Christian philosopher from France whose book ‘Confessions of a French Atheist’ tells the story of his adult conversion to Christianity.


Watch the video of this episode at The Big Conversation website


The Big Conversation is a video series from Unbelievable? featuring world-class thinkers across the religious and non-religious community. Exploring science, faith, philosophy and what it means to be human. The Big Conversation is produced by Premier in partnership with John Templeton Foundation.

For bonus content e-book, updates and more shows sign up at

Take our survey!


For Graham Oppy:

For Guillaume Bignon:


• Subscribe to the Unbelievable? podcast:

• More shows, free eBook & newsletter:

• For live events:

• For online learning:

• Support us in the USA:

• Support us in the rest of the world: