Tacitus, The Annals — Book 6 (1876)
“ To remove any doubt that the vastness of his wealth had proved the man's ruin, Tiberius kept his gold-mines for himself, though they were forfeited to the State. Executions were now a stimulus to his fury, and he ordered the death of all who were lying in prison under accusation of complicity with Sejanus. There lay, singly or in heaps, the unnumbered dead, of every age and sex, the illustrious with the obscure. ”
