M. Tullius Cicero Pro L. Murena 4

[4] And if, as is accustomed to be done in some states, an advocate were appointed to this cause by the public, that man would above all others be assigned to one invested with honours as his defender, who having himself enjoyed the same honour, brought to his advocacy no less authority than ability. But if those who are being wafted from the main into harbour are wont with the greatest care to inform those who are sailing out of harbour, of the character of storms, and pirates, and of places, because nature prompts us to favour those who are entering on the same dangers which we have passed through, of what disposition ought I to be, who after having been much tossed about am now almost in sight of land, towards him by whom I see the greatest tempests of the republic about to be encountered? Wherefore, if it is the part of a virtuous consul not only to see what is being done, but to foresee what is likely to happen, I will show in another place how much it is for the interest of the common safety that there should be two consuls in the republic on the first of January.