It was an age in which vice of every kind was regarded with great indulgence, but the moral instincts of mankind were too strong to be wholly blinded to the true character of so conspicuous an example of wickedness as this.

Arsinoe was at Rome, too, during this period of Caesar's life.

He had brought her there, it will be recollected, on his return from Egypt, as a prisoner, and as a trophy of his victory.

His design was, in fact, to reserve her as a captive to grace his _triumph_.
A triumph, according to the usages of the ancient Romans, was a grand celebration decreed by the Senate to great military commanders of the highest rank, when they returned from distant campaigns in which they had made great conquests or gained extraordinary victories.

Caesar concentrated all his triumphs into one.