On the occasion of my first visit, we toured his house and we saw hundreds of works of museum quality, and then we paused in front of a closed door and Dr. Robicsek said, with obvious pride, "" Now for the piece De resistance. "" And he opened the door and we walked into a windowless 20-by-20-foot room with shelves from floor to ceiling, and crammed on every shelf his collection of Mayan ceramics.