Publius Cornelius Tacitus (c. 56 – c. 120 AD) was a Roman historian and senator, considered one of the greatest historians of Ancient Rome. His most important works include the "Annals" (which narrate the history of the Roman Empire from Tiberius to Nero) and the "Histories" (which cover the period from the Year of the Four Emperors to the time of Domitian). Tacitus is praised for his concise and penetrating style, as well as his psychological analyses of historical figures. He is a crucial primary source for understanding the Roman Empire and the political complexities of his era. His work "Germania" also offers an important portrait of the Germanic peoples.