Oedipus (Dryden play) the construction of a play, the playwright is the "master-workman" who needs "many subordinate hands, many tools to his assistance", including "history, geography, or moral philosophy." The plot is the base of the building, the characters and their manners the sides of it. All parts must be fitted properly to the whole; every part is neatly tied in. "Oedipus, a Tragedy" was based on Sophocles's "Oedipus", but the original drama was crucially changed in several respects. Dryden and Lee add a subplot of secondary characters – a love story about Adrastus, prince of Argos, and Eurydice, Oedipus' daughter. Unlike Corneille,
Tragedy time of the empire, the tragedies of two playwrights survive—one is an unknown author, while the other is the Stoic philosopher Seneca. Nine of Seneca's tragedies survive, all of which are "fabula crepidata" (tragedies adapted from Greek originals); his "Phaedra", for example, was based on Euripides' "Hippolytus". Historians do not know who wrote the only extant example of the "fabula praetexta" (tragedies based on Roman subjects), "Octavia", but in former times it was mistakenly attributed to Seneca due to his appearance as a character in the tragedy. Seneca's tragedies rework those of all three of the Athenian tragic playwrights whose