This collection, frequently called Declamations, he arranged in ten books of Controversiae (imaginary legal cases) in which seventy-four themes were discussed, the opinions of the rhetoricians upon each case being given from different points of view, then their division of the case into different single questions (divisio), and, finally, the devices for making black appear white and extenuating injustice (colores).
Estes presentáronse en dez libros de controversias (casos legais imaxinarios), nos que se discuten setenta e catro casos, dándose a opinións dos retóricos sobre cada caso desde distintos puntos de vista, a súa división en distintas preguntas simples (divisio) e, finalmente, os mecanismos para facer aparecer o negro como branco e as circunstancias atenuantes (cores).