Of the many testimonials to the importance of the role assumed by the European universities in the political and ecclesiastical machinations which accompanied attempts to find a solution to the problems created by the elections of the rival popes Urban VI and Clement VII in 1378, there is none more striking than the tract written by Boniface Ferrer (brother of the saint) in 1411, after the Council of Pisa in 1409 had declared both the then rivals deposed, and had replaced them by Alexander v. This tract, intended as a defence of the Avignonese claimant, Benedict XIII is an extremely bitter attack on the academics of the day, both individually and generally. Several of them are singled out for criticism, especially those who had taken a major part in producing the conciliarist viewpoint. Thus, Simon de Cramaud, patriarch of Alexandria and acting president of the Council of Pisa for most of its sessions, is twice called an heresiarch. Many of the other major thinkers of the day have their integrity attacked, notably Pierre d'Ailly, bishop of Cambrai, and Baldus de Ubaldis, one of the major lawyers of the period.