Born at Prague; studied there and at Oxford (where he came under Wycliffe's influence), Paris, Heidelberg, and Cologne; acquired great learning, and displayed great energy and oratorical power; attracted the notice of the Kings of Poland and Hungary; joined John Huss in his agitation against the abuses of the Church; became involved in the movement against Huss, and though he recanted, afterwards withdrew his recantation, and was burned at Constance (about 1365-1416.)