The Parisian project was eagerly supported by Laynez, by then the Jesuits' Superior General, who wanted it to become "the most celebrated college of the Society". It was delayed, however, by dilatory initiatives by the Parliament of Paris, University of Paris, and local clergy, all of which opposed the Jesuits' establishment. In July 1563, the Jesuits were finally able to purchase the former Parisian estate of the bishop of Langres on rue Saint-Jacques, where its current now stands, and started teaching there in late 1563 (Old Style). The new institution was named , in recognition of Duprat's support but also because one of the conditions that the Jesuits accepted to overcome local opposition was not to formally name the college after the Society of Jesus as they did elsewhere. The college soon met considerable success, as it was both free and of high quality, disrupting the antiquated business models and longstanding conventions of the University of Paris. In particular, its theology course, led from the 1564 inception by Juan Maldonado, was so popular that the college's buildings were too small to contain the audience. Other prominent early faculty included Pierre Perpinien, Juan de Mariana, and Francisco Suárez. The University of Paris had been hostile to the Jesuits from the start, in line with its general rejection of novel initiatives and long before that hostility took doctrinal undertones in the 17th and 18th centuries as the Jesuits became a key adversary for Jansenists. In 1554, the University's College of Sorbonne had already issued a negative opinion regarding the opening of a college in Paris. That opposition was temporarily overcome at the monarchy's initiative during the Colloquy of Poissy on , but the University kept debating the matter after the college started teaching in 1564. On , it refused to recognize it and thereby nullified the prior favorable decision of Poissy. The multiple cases brought by the University before the court of the Parliament of Paris, and counter-cases from the Jesuits, resulted in a stalemate that lasted over the next three decades: the was not readmitted into the University system, but the Jesuits were able to continue and expand their activities, even though Maldonado was removed from Paris in 1575 following accusations of heresy by Sorbonne theologians. While the courses were free of charge, boarding costs for the resident students, who typically came from elite families, were covered by gifts and scholarships,