On 18 January 1277, Pope John XXI instructed Bishop Tempier to investigate the complaints of the theologians. "Not only did Tempier investigate but in only three weeks, on his own authority, he issued a condemnation of 219 propositions drawn from many sources, including, apparently, the works of Thomas Aquinas, some of whose ideas found their way onto the list." The list published on 7 March condemned a great number of "errors", some of which emanated from the astrology, and others from the philosophy of the Peripatetics. These included: