Medici Paulus, a Jewish convert of whom the Roman Catholic Church had reason to be proud, was a learned theologian and a skilful controversialist against modern Judaism. Of his numerous works may here be mentioned: 1. "Catalogo de Neofiti" (illustri), 1701. 2. "Promptuarium Biblicorum Textuum ad Catholicum Fidem confirmandam et Judaeorum informandam perfidiam" (1707). 3. "Dialoghi sacri supra il vechiv e Nouvo Testamento," 41 parts in 21 vols. (Venice, 1731–35. 4. "Riti e costumi degli Ebrei confutati" (Fifth edition, Venice, 1557). This work is partly supplementary and partly antagonistic to a similar work by the famous Jewish scholar, Leon de Modena.