Most of Cicero's letters were written in ink on paper or parchment
with a reed pen; a few on tablets of wood or ivory covered with
wax, the marks being cut with a stylus. The earlier letters he wrote
with his own hand, the later were, except in rare cases, dictated to
a secretary. There was, of course, no postal service, so the epistles
were carried by private messengers or by the couriers who were
constantly traveling between the provincial officials and the
capital.

Apart from the letters to Atticus, the collection, arrangement, and
publication of Cicero's correspondence seems to have been due to
Tiro, the learned freedman who served him as secretary, and to
whom some of the letters are addressed. Titus Pormponius Atticus,
who edited the large collection of the letters written to himself,
was a cultivated Roman who lived more than twenty years in
Athens for purposes of study. His zeal for cultivation was
combined with the successful pursuit of wealth; and though Cicero
relied on him for aid and advice in public as well as private
matters, their friendship did not prevent Atticus from being on
good terms with men of the opposite party.

Generous, amiable, and cultured, Atticus was not remarkable for
the intensity of his devotion either to principles or persons. "That
he was the lifelong friend of Cicero," says Professor Tyrrell, "is the
best title which Atticus has to remembrance. As a man he was
kindly, careful, and shrewd, but nothing more: there was never
anything grand or noble in his character. He was the quintessence
of prudent mediocrity."

The period covered by the letters of Cicero is one of the most