Editing Ramon Llull (section)

====Quaternary Phase====

The two main works of the Quaternary Phase are the ''Ars compendiosa inveniendi veritatem'' (ca. 1274) and the ''Ars demonstrativa'' (ca. 1283).{{sfn|Bonner|2007|p=26}} The ''Ars demonstrativa'' has twelve main figures. A set of sixteen principles, or 'dignities' (divine attributes) comprise the general foundation for the system's operation. These are contained in the first figure (Figure A) and assigned letters (B through R). The rest of the figures enable the user to take these principles and elaborate to demonstrate the truth of statements. Figure T is important because it contains "relational principles" (i.e.: minority, majority, equality, etc.), also assigned letters. The ''Art'' then lists combinations of letters as a sort of visual aid for the process of working through every possible combination of principles. Figure S displays the Augustinian powers of the soul (will, intellect, and memory) and their acts (willing, understanding, and remembering). Figure S was eliminated from the ''Art'' after 1290, though even in its subsequent versions Llull maintained that—for a proper operation of the ''Art''—the powers of the soul needed to be in alignment. This differentiates Llull's system from Aristotelian logic; because classical logic did not take the powers of the soul into account, it was—thereby, in Llull's view—ill-equipped to handle theological issues.