Epistulae ad Quintum Fratrem (Letters to brother Quintus) is a collection of letters from Roman politician and orator Marcus Tullius Cicero to his younger brother Quintus.

The letters in this collection, when combined with Cicero's other letters, are considered the most reliable sources of information for the period leading up to the fall of the Roman Republic. His letters to Quintus share a similar quality to those sent to his close friend Titus Pomponius Atticus, written with a freedom and frankness not to be found in his correspondence with others. Traditionally spanning 3 books, and featuring letters from 60 or 59 to 54 BCE, this collection may have been first published by Cicero's freedman and personal secretary Marcus Tullius Tiro sometime after the deaths of both brothers in 43 BCE.[1][2]


  1. ^ Shackleton Bailey, D. R., ed. (May 2002). Letters to Quintus and Brutus. Letter Fragments. Letter to Octavian. Invectives. Handbook of Electioneering. Harvard University Press. ISBN 9780674995994. Retrieved 5 October 2015.
  2. ^ Chisholm, Hugh, ed. (1911). "Cicero" . Encyclopædia Britannica (11th ed.). Cambridge University Press.