and finding himself deserted by his attendants, he attempted to rise from his couch, but fell dead. According to Cassius Dio, Caligula, fearing that the emperor would recover, refused Tiberius' requests for food, insisting that he needed warmth, not food; then assisted by Macro, he smothered the emperor in his bedclothes. After his death, the Senate refused to vote Tiberius the divine honours that had been paid to Augustus, and mobs filled the streets yelling "To the Tiber with Tiberius!"; the bodies of criminals were typically thrown into the river, instead of being buried or burnt. However, the emperor was cremated, and his ashes were placed in the Mausoleum of Augustus. In his will, Tiberius nominated Caligula and Tiberius Gemellus as his joint heirs. Caligula's first act on becoming Princeps was to void Tiberius' will. Legacy Historiography Had he died before AD 23, he might have been hailed as an exemplary ruler. Despite the overwhelmingly negative characterisation left by Roman historians, Tiberius left the imperial treasury with nearly 3 billion sesterces upon his death. Rather than embark on costly campaigns of conquest, he chose to strengthen the existing empire by building additional bases, using diplomacy as well as military threats, and generally refraining from getting drawn into petty squabbles between competing frontier tyrants. The result was a stronger, more consolidated empire, ensuring the imperial institutions introduced by his adoptive father would remain for centuries to come. Of the authors whose texts have survived, only four describe the reign of Tiberius in considerable detail: Tacitus, Suetonius, Cassius Dio and Marcus Velleius Paterculus. Fragmentary evidence also remains from Pliny the Elder, Strabo and Seneca the Elder. Tiberius himself wrote an autobiography which Suetonius describes as "brief and sketchy", but this book has been lost. Publius Cornelius Tacitus The most detailed account of this period is handed down to us by Tacitus, whose Annals dedicate the first six books entirely to the reign of Tiberius. Tacitus was a Roman senator, born during the reign of Nero in AD 56, and consul suffect in AD 97. His text is largely based on the Acta Senatus (the minutes of the session of the Senate) and the Acta Diurna (a collection of the acts of the government and news of the court and capital), as well as speeches by Tiberius himself, and the histories of contemporaries such as Marcus Cluvius Rufus, Fabius Rusticus and Pliny the