First, his Philosophical Works, 1. De Inventione Rhetorica, "On the Rhetorical Art;" intended to exhibit, in a compendious form, all that are most valuable in the works of the Grecian rhetoricians. 2. De Partitione Oratorio Dialogus, "A Dialogue on the several Divisions of Rhetoric," a sort of catechism of rhetoric. 3. De Oratore, "On the True Orator," a systematic work on the art of oratory. This is one of his most brilliant efforts, and so accurately finished in its minute parts, that it may be regarded as a masterpiece of skill in all that relates to the graces of style and composition. 4. Brutus: de claris Oratoribus. This is in the form of a dialogue, and contains a complete critical history of Roman eloquence. 5. Orator, "The Orator," addressed to Marcus Brutus, giving his views as to what constitutes a perfect orator. 6. De Republica, "On the Republic," in six books, designed to show the best form of government and the duty of the citizen; but a considerable portion of this is lost. 7. De Officiis; a treatise on moral obligations, viewed not so much with reference to a metaphysical investigation of the basis on which they rest, as to the practical business of the world, and the intercourse of social and political life. This is one of his most precious legacies. 8. De Finibus Bonorum et Malorum, "On the Ends of Good and Evil," a series of dialogues dedicated to M. Brutus, in which the opinions of the Grecian schools, especially of the Epicureans, the Stoics, and the Peripatetics, on the Supreme Good, the Summum Bonum, that is, the finis, "the end."


INVECTIVE AGAINST CATILINE.
(By Cicero.)

How long, O Catiline, wilt thou abuse our patience? How long shalt thou baffle justice in thy mad career? To what extreme wilt thou carry thy audacity? Art thou nothing daunted by the nightly watch, posted to secure the Palatium? Nothing, by the city guards! Nothing, by the rally of all good citizens? Nothing, by the assembling of the senate in this fortified place? Nothing, by the averted looks of all here present? Seest thou not that all thy plots are exposed?—that thy wretched conspiracy is laid bare to every man's knowledge, here in the senate?—that we are well aware of thy proceedings of last night; of the night before; the place, of meeting, the company convoked, the measures concerted? Alas, the times! Alas, the public morals! The senate understands all this. The Consul sees it. Yet the traitor lives! Lives? Ay, truly, and confronts us here in council; takes part in our deliberations; and, with his measuring eye, marks out each man of us for slaughter! And we, all this while, strenuous that we are, think we have amply discharged our duty to the state, if we but shun this madman's sword and fury!

Long since, O Catiline, ought the Consul to have ordered thee to execution, and brought upon thy own head the ruin thou hast been meditating against others! There was that virtue once in Rome, that a wicked citizen was held more execrable than the deadliest foe. We have a law still, Catiline, for thee. Think not that we are powerless because forbearing. We have a decree—though it rests among our archives like a sword in its scabbard—a decree by which thy life would be made to pay the forfeit of thy crimes. And, should I order thee to be instantly seized and put to death, I make just doubt whether all good men would not think it done rather too late, than any man too cruelly. But, for good reasons, I will yet defer the blow, long since deserved. Then will I doom thee, when no man is found so lost, so wicked, nay, so like thyself, but shall confess that it was justly dealt. While there is one man that dares defend thee, live! But thou shalt live so beset, so surrounded, so scrutinized, by the vigilant guards that I have placed around thee, that thou shalt not stir a foot against the Republic without my knowledge. There shall be eyes to detect thy slightest movement, and ears to catch thy wariest whisper, of which thou shalt not dream. The darkness of night shall not cover thy treason—the walls of privacy shall not stifle its voice. Baffled on all sides, thy most secret counsels clear as noon-day, what canst thou now have in view? Proceed, plot, conspire, as thou wilt; there is nothing you can contrive, nothing you can propose, nothing you can attempt which I shall not know, hear, and promptly understand. Thou shalt soon be made aware that I am even more active in providing for the preservation of the state than thou in plotting its destruction!—First Oration.


EXPULSION OF CATILINE FROM ROME.
(By Cicero.)

At length, Romans, we are rid of Catiline! We have driven him forth, drunk with fury, breathing mischief, threatening to revisit us with fire and sword. He is gone; he is fled; he has escaped; he has broken away. No longer, within the very walls of the city, shall he plot her ruin. We have forced him from secret plots into open rebellion. The bad citizen is now the avowed traitor. His flight is the confession of his treason! Would that his attendants had not been so few! Be speedy, ye companions of his dissolute pleasures; be speedy, and you may overtake him before night, on the Aurelian road. Let him not languish, deprived of your society. Haste to join the congenial crew that compose his army; his army, I say—for who doubts that the army under Manlius expect Catiline for their leader? And such an army! Outcasts from honor, and fugitives from debt; gamblers and felons; miscreants, whose dreams are of rapine, murder, and conflagration!

Against these gallant troops of your adversary, prepare, O Romans, your garrisons and armies; and first to that maimed and battered gladiator oppose your consuls and generals; next, against that miserable, outcast horde, lead forth the strength and flower of all Italy! On the one side, chastity contends; on the other wantonness; here purity, there pollution; here integrity, there treachery; here piety, there profaneness; here constancy, there rage; here honesty, there baseness; here continence, there lust; in short, equity, temperance, fortitude, prudence, struggle with iniquity, luxury, cowardice, rashness; every virtue with every vice; and, lastly, the contest lies between well-grounded hope and absolute despair. In such a conflict, were even human aid to fail, would not the immortal gods empower such conspicuous virtue to triumph over such complicated vice?—Second Oration.