The numbers and names you provided point directly to a specific passage in classical literature: Cassius Dio's Roman History, Book 59, Chapter 18, Section 5, which mentions an individual named Titius Rufus.

The Context of "Dio 59.18.5"

In this passage of his Roman History, the ancient historian Cassius Dio describes the tyrannical behavior of the Roman Emperor Caligula (Gaius). Section 5 specifically recounts the fate of a man named Titius Rufus:

"The same course was taken by Titius Rufus, who was charged with having declared that the senate thought one way and voted another..."

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The Passage in Greek and English

1. Ancient Greek (Original Text)

τὸ δ᾽ αὐτὸ τοῦτο καὶ Τίτιος Ῥοῦφος ἔπαθεν, αἰτιαθεὶς ὅτι εἴποι τὴν βουλὴν ἄλλα μὲν φρονεῖν ἄλλα δὲ ψηφίζεσθαι.

2. English (Translation by Earnest Cary)

"The same course was taken by Titius Rufus, who was charged with having declared that the senate thought one way and voted another."

Key Vocabulary Breakdown

• Dio (Δίων): Refers to Lucius Cassius Dio, the Greek-speaking Roman senator and historian who authored the text.
• Titius (Τίτιος): The first name (nomen) of Titius Rufus, the Roman senator mentioned in this specific line.

(Note: While "Titius" is also famous in science for the Titius–Bode law of planetary spacing, your specific coordinates of 59, 18, and 5 align with the book, chapter, and section numbering of Cassius Dio's classical text rather than an astronomical formula.)

Would you like to explore more of Book 59 to see what else happened during Caligula's reign, or are you looking for a different classical citation?