Abu al-Hasan al-aš`ari (ca. 260/873-324 / 935) was an Iraqi Muslim theologian. He created his own religious current, known as the theology to ARI or Khorāsān school. Carlos A. Segovia is a Philosophy doctor for the UCM. His investigations focus on the comparison study of religions. Between the publications of it, the Islamic philosophy and the problem of being, against heterodox and numerous articles about the three religions and of Muslim thinkers.