Let us consider Tully on the greatest theatre of the known world, and in the most difficult circumstances. We are better acquainted with him than we are with Demosthenes; for we see him nearer, as it were, and in more different lights. How perfect a knowledge had he acquired of the Roman constitution of government, ecclesiastical and civil; of the original and progress, of the general reasons and particular occasions of the laws and customs of his country; of the great rules of equity, and the low practice of courts; of the duty of every magistracy and office in the state, from the dictator down to the lictor; and of all the steps by which Rome had risen from her infancy, to liberty, to power and grandeur and dominion, as well as of all those by which she began to decline, a little before his age, to that servitude which he died for opposing, but lived to see established, and in which not her liberty alone, but her power and grandeur and dominion were lost? How well was he acquainted with the Roman colonies and provinces, with the allies and enemies of the empire, with the rights and privileges of the former, the dispositions and conditions of the latter, with the interests of them all relatively to Rome, and with the interests of Rome relatively to them?

How present to his mind were the anecdotes of former times concerning the Roman and other states, and how curious was he to observe the minutest circumstances that passed in his own? His works will answer sufficiently the questions I ask, and establish in the mind of every man who reads them the idea I would give of his capacity and knowledge, as well as that which is so universally taken of his eloquence. To a man fraught with all this stock of knowledge, and industrious to improve it daily, nothing could happen that was entirely new, nothing for which he was quite unprepared, scarce any effect whereof he had not considered the cause, scarce any cause wherein his sagacity could not discern the latent effect. His eloquence in private causes gave him first credit at Rome, but it was this knowledge, this experience, and the continued habits of business, that supported his reputation, enabled him to do so much service to his country, and gave force and authority to his eloquence. To little purpose would he have attached Catiline with all the vehemence that indignation and even fear added to eloquence, if he had trusted to this weapon alone. This weapon alone would have secured neither him nor the senate from the poniard of that assassin. He would have had no occasion to boast, that he had driven this infamous citizen out of the walls of Rome, abiit, excessit, evasit, erupit, if he had not made it before-hand impossible for him to continue any longer in them. As little occasion would he have had to assume the honour of defeating without any tumult, or any disorder, the designs of those who conspired to murder the Roman people, to destroy the Roman empire, and to extinguish the Roman name; if he had not united by skill and management, in the common cause of their country, orders of men the most averse to each other; if he had not watched all the machinations of the conspirators in silence, and prepared a strength sufficient to resist them at Rome, and in the provinces, before he opened this scene of villainy to the senate and the people: in a word, if he had not made much more use of political prudence, that is, of the knowledge of mankind, and of the arts of government, which study and experience give, than of all the powers of his eloquence.