Joseph Glanvill FRS (1636 – 4 November 1680) was an English writer, philosopher, and clergyman. Not himself a scientist, he has been called "the most skillful apologist of the virtuosi", or in other words the leading propagandist for the approach of the English natural philosophers of the later 17th century.[1] In 1661 he predicted "To converse at the distance of the Indes by means of sympathetic conveyances may be as natural to future times as to us is a literary correspondence."[2]