The first historical instance of the modern tree of life was designed by Johann Reuchlin. Paolo Riccio's son, Hyeronomius, had actively exchanged letters and shared his father's work with Reuchlin before publication. Thus, in the year 1516, Reuchlin's diagram came to appear on the cover of the Paolo Riccio's Latin translation of Joseph Gikatilla's "Gates of Light". The diagram only had 17 paths and, at the time, the concepts of 10 spheres and 22 letters were still distinct in the literature. In 1573, a version sketched by Franciscus Zillettus appeared in "Cesare Evoli, De divinis attributis". This version introduced several innovations that would reappear in later versions: all the spheres were of the same size, the lines became wide paths, the spheres were aligned into 3 distinct columns, Malkuth was connected to three spheres, and astrological symbols for the known celestial bodies were used in conjunction with the Hebrew names to label the spheres. However, it also had only 17 paths, albeit distributed differently. Reuchlin's version was reprinted in Johann Pistorius' compilation of 1587. Finally, several versions from unknown artists introducing 21 and 22 paths appeared in the posthumous print editions of Moses Cordovero's "Pardes Rimonim" between 1592 and 1609. However, the diagrams with 22 paths lacked consistency with each other and none of them