"One of the most important recent events in the world of Leibnizian studies was the publication in 2008 of volumes 4 and 5 of Leibniz's Mathematische Schriften [...]. These two volumes are a critical edition of the extant papers on infinitesimal calculus Leibniz penned in the eventful years of his Parisian sojourn." Nicollò Guicciardini in: NTM - Zeitschrift für Geschichte der Wissenschaft, Technik und Medizin; 18 (2010) 4