Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[187] When he had given them this charge, he made haste to Rhodes, to meet Caesar; and when he had sailed to that city, he took off his diadem, but remitted nothing else of his usual dignity. And when, upon his meeting him, he desired that he would let him speak to him, he therein exhibited a much more noble specimen of a great soul; for he did not betake himself to supplications, as men usually do upon such occasions, nor offered him any petition, as if he were an offender; but, after an undaunted manner, gave an account of what he had done; for he spake thus to Caesar: That he had the greatest friendship for Antony, and did every thing he could that he might attain the government; that he was not indeed in the army with him, because the Arabians had diverted him; but that he had sent him both money and corn, which was but too little in comparison of what he ought to have done for him; "for if a man owns himself to be another's friend, and knows him to be a benefactor, he is obliged to hazard every thing, to use every faculty of his soul, every member of his body, and all the wealth he hath, for him, in which I confess I have been too deficient. However, I am conscious to myself, that so far I have done right, that I have not deserted him upon his defeat at Actium; nor upon the evident change of his fortune have I transferred my hopes from him to another, but have preserved myself, though not as a valuable fellow soldier, yet certainly as a faithful counselor, to Antony, when I demonstrated to him that the only way that he had to save himself, and not to lose all his authority, was to slay Cleopatra; for when she was once dead, there would be room for him to retain his authority, and rather to bring thee to make a composition with him, than to continue at enmity any longer. None of which advises would he attend to, but preferred his own rash resolution before them, which have happened unprofitably for him, but profitably for thee. Now, therefore, in case thou determinest about me, and my alacrity in serving Antony, according to thy anger at him, I own there is no room for me to deny what I have done, nor will I be ashamed to own, and that publicly too, that I had a great kindness for him. But if thou wilt put him out of the case, and only examine how I behave myself to my benefactors in general, and what sort of friend I am, thou wilt find by experience that we shall do and be the same to thyself, for it is but changing the names, and the firmness of friendship that we shall bear to thee will not be disapproved by thee."