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
The Aristocracy Submits
It was now therefore the turn of the aristocracy to make good their high gage, and to wage war as boldly as they had boldly declared it. But there is no more pitiable spectacle than when cowardly men have the misfortune to take a bold resolution. They had simply exercised no foresight at all. It seemed to have occurred to nobody that Caesar would possibly stand on his defence, or that Pompeius and Crassus would combine with him afresh and more closely than ever. This seems incredible; but it becomes intelligible, when we glance at the persons who then led the constitutional opposition in the senate. Cato was still absent;(4) the most influential man in the senate at this time was Marcus Bibulus, the hero of passive resistance, the most obstinate and most stupid of all consulars.
4. Cato was not yet in Rome when Cicero spoke on 11th March 698 in favour of Sestius (Pro Sest. 28, 60) and when the discussion took place in the senate in consequence of the resolutions of Luca respecting Caesar's legions (Plut. Caes. 21); it is not till the discussions at the beginning of 699 that we find him once more busy, and, as he travelled in winter (Plut. Cato Min. 38), he thus returned to Rome in the end of 698. He cannot therefore, as has been mistakenly inferred from Asconius (p. 35, 53), have defended Milo in Feb. 698.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/5-08-pompeius-caesar.asp?pg=29