" If it weren’t for the great Scottish missionary David Livingstone, the Yao and Chewa might still be at odds today. Livingstone helped end slavery, opened Malawi to trade, and built good schools and missions. Young men became educated and earned money, and once these economic opportunities were available to all, our two tribes had little reason to fight. Today we consider the Yao our brothers and sisters. My "

― William Kamkwamba , The Boy Who Harnessed the Wind: Creating Currents of Electricity and Hope