The Estienne printing studio was established on rue de l'ecole de Droit, where Estienne was printer-bookseller for the University of Paris. Estienne's printmark was of the old arms of the University, a shield charged with three Fleurs de Lis, with a hand emerging from a cloud and holding a closed book with the motto was: "Plus olei quam vini" ("more oil than wine,"). One of Estienne's frequent authors was Jacques Lefèvre d'Étaples; Estienne published his "Psalterium quintuplex" in 1509, his commentaries on Psalms in 1507, and commentaries on the Epistles of Paul in 1512. Moreover, these works represented one of the first instances in which the Bible was studied philologically. In addition to Estienne's collaboration with Lefèvre d'Étaples, Estienne had connections with Guillaume Budé and Guillaume Briçonnet. Beatus Rhenanus served as one of Estienne's proofreaders. Estienne took great care to avoid printing errors in his work. If any mistake occurred, he would use errata sheets to correct the error and may have been the first printer to do so. Additionally, Estienne usually indicated on his prints that they were for sale at his printing press, a practice not often followed by his son Robert Estienne.