Henry Drummond (17 August 1851 - 11 March 1897) was a Scottish author, scientist and ordained minister. He was born in Stirling and educated at Edinburgh University. He first became famous for his book "Natural Law in the Spiritual World" which was published in 1883. However, the timeless classic "The Greatest Thing in the World," which teaches the importance of loving God and man, will continue to influence members of society for generations to come. This best seller has sold more than 12 million copies.