The instruction we find in books is like fire. We fetch it from our neighbours, kindle it at home, communicate it to others, and it becomes the property of all.
The human brain is a complex organ with the wonderful power of enabling man to find reasons for continuing to believe whatever it is that he wants to believe.
You will notice that in all disputes between Christians since the birth of the Church, Rome has always favored the doctrine which most completely subjugated the human mind and annihilated reason.