These privileges were used to such advantage that the institution acquired great wealth; and through its boarders, some of whom belonged to the most important families of France, it became influential to an almost incalculable degree. For four centuries this convent had been developing liberal tendencies and gradually falling away from its primitive austerity, when, in 1605, Sister Angélique Arnauld became abbess and undertook a thorough reform. So great was her success in this direction that, after having effected similar changes at the Convent of Maubuisson and then returned to Port-Royal des Champs, the latter became so crowded that new and more commodious quarters had to be obtained.
The immense and beautiful Hôtel de Cluny, at Paris, was procured, and a portion of the community moved thither, establishing an institution which became the best known and most popular of those French convents which were patronized by women of distinction. The old abbey buildings near Versailles were later occupied by a community of learned and pious men who were, for the most part, pupils of the celebrated Abbé of Saint-Cyran, who, with Jansenius, was living at Paris at the time that Mère Angélique was perfecting her reforms; she, attracted by the ascetic life led by the abbé, fell under his influence, and the whole Arnauld family, numbering about thirty, followed her example.
Soon "the nuns at Paris, with their numerous and powerful connections, and the recluses at Port-Royal des Champs, together with their pupils and the noble or wealthy families to which the latter belonged, were imbued with the new doctrines of which they became apostles." The primary aim was to live up to a common ideal of Christian perfection, and to react against the general corruption by establishing thoroughly moral schools and publishing works denouncing, in strong terms, the glaring errors of the time, the source of which was considered, by both the Abbé of Saint-Cyran and Jansenius, to lie in the Jesuit Colleges and their theology. Thus was evolved a system of education in every way antagonistic to that of the Jesuits.
At this time the convent at Paris became so crowded that Mère Angélique withdrew to the abbey near Versailles, the occupants of which retired to a neighboring farm, Les Granges; there was opened a seminary for females, which soon attracted the daughters of the nobility. An astounding literary and agricultural activity resulted, both at the abode of the recluses and at the seminary: by the recluses were written the famous Greek and Latin grammars, and by the nuns, the famous _Memoirs of the History of Port-Royal_ and the _Image of the Perfect and Imperfect Sister_; a model farm was cultivated, and here the peasants were taught improved methods of tillage. During the time of the civil wars the convent became a resort where charity and hospitality were extended to the poor peasants.