The famous orator and statesman known for his powerful speeches against tyranny in ancient Rome was Cicero. A prominent figure in the late Roman Republic, Cicero was renowned for his eloquence and persuasive rhetoric. He championed the Republican ideals and spoke out against political corruption and autocracy, notably opposing the dictator Julius Caesar's rise to power. His written works, including philosophical essays and orations, have influenced many thinkers throughout history. Cicero's legacy as a defender of the Republic and advocate for justice continues to resonate in discussions of oratory and political philosophy.