Giovanna Sillitti is a former associated professor in Theoretical Philosophy at the Department of Philosophy of the University of Rome 'La Sapienza'. Her work is mostly dedicated to the Presocratics, Plato and Aristotle. PhD in Philosophy. – Fabio Stella is currently associated researcher at the ISTA (Institut des sciences et techniques de l'antiquité) at the University of Franche-Comté. His work is mostly dedicated to the origin and the development of the greek verbs of knowledge and to the notion of nous. – Francesco Fronterotta is associated professor in the History of Ancient Philosophy at the Department of Philosophy of the University of Rome 'La Sapienza'. He works on the Presocratics, Plato and the Platonic tradition.