Cicero was a male Human who lived in the second and first centuries BC. Cicero was known for his writings.
In 2369, Jean-Luc Picard cited Cicero's works as evidence that "primitives can possess wisdom and genius without our technological trappings." (TNG novel: Debtors' Planet)
In 2375, Admiral William Ross cited the term "inter arma enim silent leges" from one of Cicero's speeches. (DS9 episode: "Inter Arma Enim Silent Leges")