Ibn Taymiyyah

Ibn Taymiyyah is one of the most fascinating scholars from the Islamic civilization, acknowledged for his intellectual brilliance by both his admirers and his detractors.

His readiness to present his own scholarly interpretations of scripture and his instinctive rejection of much of the received wisdom of his day, mark him out as one of the most original thinkers of Islam. 
He had extensive knowledge of the Quran, Sunnah, Greek philosophy, Islamic history and religious books of others as is evident from the variety of the books he wrote.