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I'm trying to figure out the biology of dinosaurs and what they were like as living creatures.

Now, to find dinosaurs, you hike around in horrible conditions looking for a dinosaur. It sounds really dumb, but that's what it is. It's horrible conditions, because wherever you have nice weather, plants grow, and you don't get any erosion, and you don't see any dinosaurs.

My father had owned a ranch when he was younger, in Montana, and he remembered riding his horse across the prairie and seeing some large bones sticking out of the ground. He was enough of a geologist, being a sand and gravel man, to have a pretty good notion that they were dinosaur bones.

To me it seems that the warm blooded dinosaurs replaced advanced mammal ancestors that were warm blooded, also.

I think most of the dinosaur specimens we find represent subadult sizes.

There's an incomparable rush that comes from finding dinosaur bones. You know you're the first person to lay hands on a critter that lived 80 or 90 million years ago.

Introspection and preserved writings give us far more insight into the ways of past humans than we have into the ways of past dinosaurs. For that reason, I'm optimistic that we can eventually arrive at convincing explanations for these broadest patterns of human history.