Delfino's literary activity begun in his university years in Padua. Today he is chiefly remembered for his four plays. He wrote three historical
tragedies based on the traditional
Counter-Reformation conflict between
reason of state and love or personal ethics:
Cleopatra,
Lucrezia,
Creso; and a free adaptation from the
Orlando Furioso,
Medoro, all printed posthumously. Delfino contributed to the controversy over the propriety of rhyme in tragedy, and himself used less rhyme in his later works. Although well known and appreciated in intellectually distinguished circles, Delfino chose not to publish his works during his lifetime. The
Cleopatra was first printed in
Scipione Maffei's collection
Teatro italiano. The four tragedies were published in Utrecht in 1730 and re-edited in a much more correct edition by Comino in Padua in 1733 together with an apologetic
Dialogo sopra le tragedie, in which he advocated a
neoclassical reform of tragedy. Delfino wrote six Dialogues in verse on philosophical and scientific questions that were published posthumously in Venice in 1740. He left two manuscripts containing ten philosophical and scientific Dialogues in prose. Delfino appears to be very well versed in the
New Science, discusses
Pierre Gassendi’s and
Galileo’s theories,
Lucretius'
atomism, the philosophy of
Franciscus Patricius and
Francis Bacon and the scientific and philosophical ideas of
Fortunio Liceti and
Athanasius Kircher. His vivid writing style was much appreciated by Orazio Rucellai and
Carlo Roberto Dati. Only one of his prose Dialogues - dedicated to
astronomy - has been published. He wrote also poems on celebratory, heroic or meditative subjects and ethical and political remarks on
Sallust's
Bellum Catilinae and
Tacitus's
Agricola. Delfino was made a member of the
Accademia Galileiana on April 3, 1645, and of the
Accademia della Crusca on September 27, 1667. His correspondents included, among others: the poets
Ciro di Pers, and
Michelangelo Torcigliani, the Emperor
Leopold I, the
Generalfeldmarschall Raimondo Montecuccoli, the Cardinal Giulio Rospigliosi (famous poet and future
Pope Clement IX) and the
Jesuit philosopher and Cardinal
Francesco Sforza Pallavicino. == List of works ==