Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
Perhaps it was possible to find out
for his awkward, vacillating, and arrogant rival some sort
of honourable and influential position, in which the latter might be
content to sink into a nullity; the repeated attempts of Caesar
to keep himself related by marriage to Pompeius, may have been
designed to pave the way for such a solution and to bring about
a final settlement of the old quarrel through the succession
of offspring inheriting the blood of both competitors.
The republican
opposition would then remain without a leader and therefore
probably quiet, and peace would be preserved. If this should not
be successful, and if there should be, as was certainly possible,
a necessity for ultimately resorting to the decision of arms,
Caesar would then as consul in Rome dispose of the compliant majority
of the senate; and he could impede or perhaps frustrate the coalition
of the Pompeians and the republicans, and conduct the war
far more suitably and more advantageously, than if he now as proconsul
of Gaul gave orders to march against the senate and its general.