On various occasions, al-Mamoon tried to force Imam Reza(A.S.) into the arena of complex debates with various groups and creeds. He used to conduct scientific and intellectual sessions to which he invited giant thinkers, leading scientists, the atheists of the century, and debaters whose scientific might was feared and before the stubbornness of whose complex arguments the evidence was muted and due to the fierceness of whose doubt the proof was weakened. In all such debates, the Imam would come out victorious over his opponents due to the tremendous power of knowledge he possessed without forcing himself into the sophistry of arguments to which some might have resorted in order to demolish the structure of his opponent's argument and weaken his ability to provide evidence. Rather, he depended in his debate upon honest arguments in order to prove right to be right, his miraculous ability of conviction, and his calm stylistic method.