Born in 1944, John Davidson has had a lifelong interest in mysticism. After graduating in 1966 from Cambridge University with an honors degree in natural (biological) sciences, he went on to work for seventeen years at the University's Department of Applied Mathematics and Theoretical Physics. After leaving the University, he wrote a series of five books on science and mysticism. His intention was to give a voice to the idea that an understanding of science was in no way incompatible with a spiritual perception of things. In 1989, John began researching the origins of Christianity. He went on to write several books on the subject, illustrated with stories, parables, and poetry from early Christian times. Soon after, he began to work on what was to become the multi-volume A Treasury of Mystic Terms, of which Part I, II, and III have been published, and Part IV is almost ready for publication. This will complete the series. The work incorporates contributions by a large number of people from various cultural and religious backgrounds. Its intention is to demonstrate the fundamental universal elements in the world's religious and spiritual traditions. It provides both information and inspiration.