[IV.108] "These three, Octavius Cæsar, Antonius, and Lepidus, made an agreement between themselves, and by those articles divided the provinces belonging to the empire of Rome among themselves, and did set up bills of proscription and outlawry, condemning two hundred of the noblest men of Rome to suffer death, and among that number Cicero was one."—Plutarch, Marcus Brutus.

[IV.109] ll. 179-180 Cicero is ... proscription | One line in Ff.

[IV.110] Both 'nor nothing' and 'writ' survive to-day as vulgarisms.

[IV.111] Nothing, Messala. This may seem inconsistent with what has gone before (see more particularly ll. 154-155), but we are to suppose that Brutus's friends at Rome did not write to him directly of Portia's death, as they feared the news might unnerve him, but wrote to some common friends in the army, directing them to break the news to him, as they should deem it safe and prudent to do so.

[IV.112] l. 185 Two lines in Ff.

[IV.113] aught Theobald | ought Ff.

[IV.114] once: at some time or other. So in The Merry Wives of Windsor, III, iv, 103:

I thank thee; and I pray thee, once to-night

Give my sweet Nan this ring.

[IV.115] art: theory. This speech may be paraphrased, I am as much a Stoic by profession and theory as you are, but my natural strength is weak when it comes to putting the doctrines into practice.