"had declared himself an egg merchant. "If thou select one of thy baskets and put into it each morning ten eggs and take out from it each evening nine eggs, what will eventually happen?" "It will become in time overflowing." "Why?" "Because each day I put in one more egg than I take out." Arkad turned to the class with a smile. "Does any man here have a lean purse?" First they looked amused. Then they laughed."