Leon Denis (January 1, 1846 - March 12, 1927) was born in Foug, Meurthe-et-Moselle, France. He became a Spiritist after reading Allan Kardec's magnum Opus, The Spirits Book while he was a young man. The book had a marked effect on him and after reading it he commented: I found in this book the clear solution, complete and logical, to a universal problem. My conviction became strong and sound. The Spiritist Theory dissipated my indifference and my doubts. Denis became a champion of Kardec's teaching and dedicated his life to its cause. He was known as 'The Apostle of Spiritsm' and he summerised his personal mission when he stated; I have consecrated this existence to the service of a Great cause, Spiritism or Modern Spiritualism that will certainly be the universal faith and the religion of the future.
