Tribonian died in 542 of a disease, perhaps the plague.[12] Tribonian's career is summarized by his noted modern biographer, Tony Honoré, in this way: "...he was Justinian's minister for legislation and propaganda for nearly twelve years...In these years the three volumes of the Corpus Juris Civilis and most of the surviving legislation of Justinian's reign were produced. He drafted about three-quarters of the surviving constitutions of Justinian's reign. He planned and directed the work of the Second Law Commission, which produced the Digest, the Institutes and the Second "Codex Iustinianus."[13]