The owner of a priceless antiques collection allowed a museum to exhibit his treasures. The movers packed the vases while the collector hovered over them. "Do be careful," he cautioned one burly mover. "That vase is nearly two thousand years old."
"Don't worry," the guy replied. "I'll treat it like it was brand new."
DaVinci wrote notebook entries in mirror (backwards) script, a trick that kept many of his observations from being widely known until decades after his death. It is believed that he was hiding his scientific ideas from the powerful Roman Catholic Church, whose teachings sometimes disagreed with what Leonardo observed.
