 Its development is divided into two great phases. The first one is called the Quaternary Phase, for it is organized based on the model of the four elements which form the base of the majority of the analogies used by Llull. The Quaternary Phase comprises two main texts: the Ars compendiosa inveniendi veritatem, written by Llull following the revelation of the Art at the Puig de Randa Mount in 1274, and the Ars demonstrativa in 1283, in addition to other texts that comment or explain the Ars. The second phase is known as Ternary Period, for it follows the structure of a trinity. It began with the criticism experienced in Paris with the Ars inventiva veritatis (1290), followed by the modification of the Tabula generalis (1293–4), and it concludes with the Ars generalis ultima (1305–8) and its abbreviated version, which incidentally had the most comments and discussions during the Renaissance, the Ars brevis of 1308.