section_path: Works
section_name: Works
paragraph_text: Works
  
  Although he died before his fiftieth birthday, and was only writing actively for about two decades, Thomas managed to write over eight million words. Thomas's systematic works, particularly the Summa Theologiae, are his best-known, but collections of his complete works are dozens of volumes long. His works can be grouped into six categories:
  
  The first edition of Thomas's complete works, the so-called editio Piana (from Pius V, the Pope who commissioned it), was produced in 1570 at the studium of the Roman convent at Santa Maria sopra Minerva, the forerunner of the Pontifical University of Saint Thomas Aquinas, Angelicum.
  
  The critical edition of Thomas's works is the ongoing edition commissioned by Pope Leo XIII (1882–1903) under the title Sancti Thomae Aquinatis Doctoris Angelica Opera Omnia, the so-called Leonine Edition. Most of his major works have now been edited for the Leonine Edition. They include Thomas's commentaries on Aristotle's On Interpretation (Peri hermeneias) and Posterior Analytics (Posteriorum analyticorum), prepared by Thomas Maria Zigliara, in the first volume (1882), the Summa Theologiae in nine volumes from 1888 to 1906, and the Summa contra Gentiles in three volumes from 1918 to 1930.
  
  Abbé Migne published an edition of the Summa Theologiae, in four volumes, as an appendix to his Patrologiae Cursus Completus (English editions: Joseph Rickaby 1872, J.M. Ashley 1888).
  
  Electronic texts of mostly the Leonine Edition are maintained online by the Corpus Thomisticum by Enrique Alarcón, University of Navarra, and at Documenta Catholica Omnia.