People like Abu Hamid al-Ghazali

Al-Ghazali, full name Abū Ḥāmid Muḥammad ibn Muḥammad aṭ-Ṭūsiyy al-Ġazzālīy, and known in Persian-speaking countries as Imam Muhammad-i Ghazali or in Medieval Europe by the Latinized as Algazelus or Algazel, was a Persian polymath. He is known as one of the most prominent and influential jurisconsults, legal theorists, muftis, philosophers, theologians, logicians and mystics of the Islamic Golden Age.