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
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Bearing of Caesar towards the Parties
However much Caesar was wont to treat all things relating to his personal safety with daring indifference, he could not possibly conceal from himself the very serious danger with which this mass of malcontents threatened not merely himself but also his creations.
If nevertheless, disregarding all the warning and urgency of his friends, he without deluding himself as to the implacability of the very opponents to whom he showed mercy, persevered with marvellous composure and energy in the course of pardoning by far the greater number of them, he did so neither from the chivalrous magnanimity of a proud, nor from the sentimental clemency of an effeminate, nature, but from the correct statesmanly consideration that vanquished parties are disposed of more rapidly and with less public injury by their absorption within the state than by any attempt to extirpate them by proscription or to eject them from the commonwealth by banishment.
Caesar could not for his high objects dispense with the constitutional party itself, which in fact embraced not the aristocracy merely but all the elements of a free and national spirit among the Italian burgesses; for his schemes, which contemplated the renovation of the antiquated state, he needed the whole mass of talent, culture, hereditary, and self-acquired distinction, which this party embraced; and in this sense he may well have named the pardoning of his opponents the finest reward of victory.
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Reference address : https://www.ellopos.net/elpenor/rome/5-11-old-republic-new-monarchy.asp?pg=23