Jean De Labadie, a French mystic, born at Bourg-en-Guienne in February, 1G10, died in Altona, Holstein, Feb. 13, 1674. He was educated at the Jesuits' college of Bordeaux, and was for some time a member of that society; but in 1650 he became a Protestant, settled at Montauban, was elected pastor of the church, and remained there eight years, during which he founded a mystical sect, resembling the quietists of his old communion, and called La-badists. Being at length banished from Montauban for sedition, he went first to Orange, and afterward to Geneva, whence in 1666 he was invited to Middelburg, Holland. Here his followers increased in number, and included many persons of rank and education, among whom were Anna Maria von Schurmann and the princess palatine Elizabeth. The heterodoxy and contumacy of Labadie, however, led to his deposition by the synod of Naarden, and to his banishment from the province. He formed a church in a small village near Amsterdam, and established a press for the publication of his works, but was ultimately compelled to remove to Altona. The Labadists do not now exist.