Alexander Duff was a Scottish missionary and educator born in 1806. He is best known for his work in India, where he played a significant role in promoting education and Christianity. Duff founded the first Christian college in India, the Presidency College in Calcutta, which aimed to provide a modern education based on Western principles. Throughout his life, Duff emphasized the importance of education in transforming society. He believed that by educating the local population, he could help improve their lives and promote social change. His efforts laid the groundwork for future educational reforms in India and influenced many subsequent missionaries and educators.