Protrepticus (Aristotle)
Protrepticus (Ancient Greek: Προτρεπτικός) or, "Exhortation to Philosophy" (Ancient Greek: Φιλοσοφητέον) is a lost philosophical work written by Aristotle in the mid-4th century BCE. The work was intended to encourage the reader to study philosophy. Although the Protrepticus was one of Aristotle's most famous works in antiquity, it did not survive except in fragments and ancient reports from later authors, particularly from Iamblichus, who appears to quote large extracts from it, without attribution, alongside extracts from extant works of Plato, in the second book of his work on Pythagoreanism.