Finding Freemasonry expensive, and not open to his ideas, he founded his own society which was to have a system of ranks or grades based on those in Freemasonry, but with his own agenda.[6] His original name for the new order was Bund der Perfektibilisten, or Covenant of Perfectibility (Perfectibilists); he later changed it because it sounded too strange.[7] On 1 May 1776, Weishaupt and four students formed the Perfectibilists, taking the Owl of Minerva as their symbol.[8][9] The members were to use aliases within the society. Weishaupt became Spartacus. Law students Massenhausen, Bauhof, Merz and Sutor became respectively Ajax, Agathon, Tiberius and Erasmus Roterodamus. Weishaupt later expelled Sutor for indolence