What is Truth?

Science does not contradict "the ancient book" i believe in.
Oh, yes, it does.

I believe God is the author of both Scripture and Nature, and neither can contradict the other. Apparent contradictions are the result of either faulty translation or my faulty understanding and interpretation. If I say "it's raining cats and dogs", you understand what I mean; 2,000 years later in a different culture, that meaning might be very obscure.
Isn't it convenient, how everything in the Bible is true, but when there is a contradiction, is you who does not understand? And how the "this may have meant something different back then " only applies to contradictions?

But back to your point. Belief in evolution and "old world creation" are not prohibited by neither the bible nor my Catholic faith. As a Catholic, I am allowed to take either or both of those positions if I choose. I don't believe in macro evolution, but I do believe we live in a very old world.
You are allowed to believe in anything you want. You don't believe in macro evolution because it contradicts your faith, not because you have made a conscious, honest effort to learn.