Alexandra Fuller said this quote

The doctor in Murare is old - old for anybody. He is especially old for a doctor and especially old for an African. But he doesn´t have the luxury of retirement to look forward to. There aren´t enough doctors in Africa. Those who choose to become doctors here don´t do it for the money or because thy want to do good. They do it because they have to heal, the way most people need to breath or eat or love. They can´t stop. As long as they are alive, they will never not be a doctor. They can be old, or alcoholic or burnt-out, but they will always be a doctor.