One day, a boy named Theo is called into the living room by his parents to meet "the most famous man alive." Theo is so nervous, he's not sure he'll be able to speak. But he finds the great man--Professor Albert Einstein--to be kind and gentle. Soon they are chatting about all sorts of subjects. When Theo and Professor Einstein go out for a sail on Theo's small boat, the Professor unexpectedly loses his compass overboard. The compass was a cherished...