Catholic theology is always changing - and we admit errors sometimes occur (you know, little things like... the inquisition... the Dark Ages... black plague after killing cats etc).
Fundamentalists and pure atheists have one thing in common - the arrogance to believe they know the truth, and not just the truth for their own time and place in society, but the WHOLE and TOTAL truth that abides no dispute. With such beliefs come intolerance, genocide and sadly, the kind of greed that now threatens to destroy our very biosphere.
I'm concerned about the growth of the Christian/European ethic - as Ghandi said, "If we were to live as you do, we would consume the earth like ants." Well folks, read about Chinese and Indian economic development and tremble. 80% of the structural steel and raw cement made worldwide last year went to those places.
I'd suggest anyone who is interested in Bible truths read the Nag Hammadi (the Dead Sea Scrolls). There is a tremendous amount of Christian philosophy that was suppressed before the Bible was set into the patterns we know today. Elements calling for female equality, Christ's belief in reincarnation and the role of Christ as an example (and ordinary man wanting to lead, not be worshipped) are hugely misunderstood due to deliberate exclusion from the Bible anything that didn't support the church hierarchy and growth of church power.
With the originals destroyed, the revised Bible and illiterate population resulted in the profitable exchange of money and obedience to church officials for salvation that sadly, is the foundation of traditional Christianity to this day - Catholic and Protestant alike.