I believe in my heart that dinos and man where here together. It is because of evidence that I have studied leads me to this belief.

And he does not see how these two things contradict each other?

If I went with what I "believed in my heart" about, say, tigers as a child before I studied them, and tried to combine that with what I actually learned about tigers, I would have believed that tigers were big cuddly kitty-cats when human children were around and predatory terrors when adult humans were. Children's books were the source of quite a lot of my "heartfelt beliefs" at the time.