At least concerning Christian doctrine, you believe what the Church teaches, and consider further investigation sinful.

The Catholic Answers

I certainly believe implicitly the official and defined teachings of the Catholic Church since Christ said, \”If a man will not hear the Church, let him be as the heathen.\” But I may investigate as much as I wish. The more I find out about the truth taught by the Catholic Church the better the Church is pleased. It is one thing to deny a doctrine; quite another to investigate its full significance. But not all the investigation in the world will ever prove a single dogma of the Catholic Church untrue.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty