I began to suspect that Catholicism was bullshit when I was introduced to The Index of Forbidden Books. It was also stated in the Catholic catechisms that students were forbidden to read any literature that might cause them to doubt their faith. As far as I was concerned, any ideas which must be shielded from rational scrutiny are, in all probability, bogus.
"The world is my country; all of humanity are my brethren; and to do good deeds is my religion." (Thomas Paine)