Kamal was excited. His best friend Abby's birthday was today. In the kitchen, Kamal found his mother, Sherry, drinking her morning cup of coffee out of the mug he had given her for Mother's Day. He said, "Good morning, Mom....

Adapted from a story by Malba Tahan (pen name for Julio Cesar de Mello e Souza, 1895-1975), a mathematician from Brazil who also wrote The Man Who Counted (Editoria Record, 2001), which was first published in Brazil in 1949.Once, two friends named Mussa and Nagib made a journey through the mounta...