"How can you believe all this stuff? Ever since he became Catholic, Trent Horn has spent a lot of time answering these questions, trying to explain to friends, family, and total strangers the reasons for his Catholic faith. Some didn't believe in God, or even in the existence of truth. Others said they were spiritual but didn't think you needed religion to be happy. Some were Christians who thought Catholic doctrines over-complicated the pure gospel. And some were fellow Catholics who had a hard time understanding everything they professed to believe on Sunday.