George SinclairScottish preacher and scholar George Sinclair lived from 1618 until 1696. His most famous work, "Satan's Invisible World Discovered," examines the presence of witches, demons, and other paranormal creatures in 17th-century Scotland. Sinclair was a hihly educated individual who earned degrees from the Universities of St. Andrews and Edinburgh. During the Civil War, he also worked as a chaplain for the Scottish Army. He eventually held various important roles in the Church of Scotland. Along with "Satan's Invisible World Discovered," Sinclair has authored a number of other books on religion, philosophy, and natural history. He was well-known for his ability to make complicated concepts understandable to a broad audience, and his writings were extensively read and regarded in his day.  Read More Read Less