Most people have heard of Mother Teresa, the Christian nun who spent her life helping the poor and needy in the slums of India.
One hundred years since her birth, Al Jazeera is looking at people around the world who have devoted their lives to helping others, but are perhaps less well known.
One of those unsung heroes is a 91-year-old Egyptian woman from Alexandria. Inaya Essafti works to empower women by teaching them how to read.
Al Jazeera’s Ayman Mohyeldin has her story.