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
Passive Resistance of Caesar
It was not the intention of Caesar on the other hand to fall out at this moment with Pompeius. He could not indeed desire seriously and permanently to share the ruling power with any colleague, least of all with one of so secondary a sort as was Pompeius; and beyond doubt he had long resolved after terminating the conquest of Gaul to take the sole power for himself, and in case of need to extort it by force of arms. But a man like Caesar, in whom the officer was thoroughly subordinate to the statesman, could not fail to perceive that the regulation of the political organism by force of arms does in its consequences deeply and often permanently disorganize it; and therefore he could not but seek to solve the difficulty, if at all possible, by peaceful means or at least without open civil war.
But even if civil war was not to be avoided, he could not desire to be driven to it at a time, when in Gaul the rising of Vercingetorix imperilled afresh all that had been obtained and occupied him without interruption from the winter of 701-702 to the winter of 702-703, and when Pompeius and the constitutional party opposed to him on principle were dominant in Italy. Accordingly he sought to preserve the relation with Pompeius and thereby the peace unbroken, and to attain, if at all possible, by peaceful means to the consulship for 706 already assured to him at Luca. If he should then after a conclusive settlement of Celtic affairs be placed in a regular manner at the head of the state, he, who was still more decidedly superior to Pompeius as a statesman than as a general, might well reckon on outmanoeuvring the latter in the senate-house and in the Forum without special difficulty.
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Reference address : http://www.ellopos.net/elpenor/rome/5-09-crassus-joint-rulers.asp?pg=31