Since I don't normally do my 'This Day in Ancient History' feature on Sundays, allow me to share this tidbit of Gibbonalia I recently came across in Munsell's Every Day Book of History and Chronology under the date October 15, 1764:

Gibbon says that on this day, as he sat musing among the ruins of the Roman capitol, while the barefooted friars were singing vespers in the Temple of Jupiter, he first conceived the idea of writing the Decline and Fall of the Roman Empire.

Munsell also has this day in 55 B.C. as the date of the death of Lucretius. [I've often wondered ... do you think Lucretius had a lararium in his house?]