Learning nothing

"Well, here we all are with all our shelves full of books on evolution. We've all read tons of them, and most of us have written one or two. And how could it be that we've done all that, we've read these books and learned nothing from them? And how could I have worked on evolution for twenty years, and learned nothing from it?"

Dr. Colin Patterson, lifelong evolutionist, in a 1981 lecture presented at New York City's American Museum of Natural History