SACY, the name by which Louis Isaac le Maître was commonly known. He was born in Paris in 1613, and was educated for the church. The instructions of his uncle, the great Arnauld, and of his spiritual guide, the Abbé of Saint Cyran, made him a zealous Jansenist. Withdrawing in the company of those of the same mind to the famous suburban retreat of Port-Royal-des-Champs, he commenced a life of opposition to the errors and vices of the Jesuits. For several years he assisted his fellow-recluses in instilling their opinions into a small number of pupils, and in composing works for the better enlightenment of their age. Persecution assailed him in 1661, but his zeal remained unabated. Fleeing before his enemies, he became an outcast for his principles. Till 1666 there was no other hiding-place for him but the dingy recesses of the Faubourg Saint Antoine. For the following three years his studies were prosecuted in a cell of the Bastille. Even after his liberation the attacks of his enemies did not cease. He returned to Port-Royal in 1675, only to be chased from it in 1679. Weary and worn-out, he retired to the house of his cousin, the Marquis of Pomponne, and died there in 1684. The following is a list of the principal works of Sacy:—Enlumines du Fameux Almanach des Jésuites intitulé la Déroute et la Confusion des Jésuites, in 8vo, 1654; a French translation of the De Imitatione Christi, in 8vo, 1662; a French translation of the New Testament, in 2 vols. 8vo, 1667; and a French translation of the Psalms of David, in 3 vols. 12mo, 1696.