J AN VAN Ruysbroeck-three of whose most important works are here for the first time presented to English readers-is the greatest of the Flemish mystics, and must take high rank in any list of Christian contemplatives and saints. He was born in I273, at the little village of Ruysbroeck or Ruysbroeck between Brussels and Hal, from which he takes his name; and spent his whole life within his native province of Brabant. At eleven years old, he is said to have run away from home and found his way to Brussels where he was received by his uncle Jan Hinckaert, a canon of the Cathedral of 5t Gudule....