  The second ancient introduction to logic that has survived is Apuleius’ (2nd cent. CE) De Interpretatione. This Latin text, too, displays knowledge of Stoic and Peripatetic logic; it contains the first full presentation of the square of opposition, which illustrates the logical relations between categorical sentences by diagram. The Platonist Alcinous (2nd cent. CE), in his Handbook of Platonism chapter 5, is witness to the emergence of a specifically Platonist logic, constructed on the Platonic notions and procedures of division, definition, analysis and hypothesis, but there is little that would make a logician’s heart beat faster. At some time between the 3rd and 6th century CE Stoic logic faded into oblivion, to be resurrected only in the 20th century, in the wake of the (re)-discovery of propositional logic.