So, my friend and I got into a small argument about the “Index Librorum Prohibitorum” which is a list of books banned by the Catholic Church from Paul IV (1559) until Paul VI (1966) abolished it from ecclesiastical law (the moral responsibilities were then put upon the individual Christian to be aware of materials damaging to faith and morals).
My friend then proceeded to say that it was probably a good thing to do this. I looked at him funny and asked why it was a good thing. His response was that censorship is wrong because it restrains the person from their natural right to freedom of speech. I then responded that Freedom of speech is not a natural right and that I had thought I read somewhere that freedom of speech is actually contradictory to the Catholic church.
Now, either I’m mistaken, or he is mistaken (or maybe there is the possibility that there is a middle ground) but can someone please provide evidence for either side or what the Church teaches on Freedom of Speech?