Hasan-i Sabbah

A  rawar da ya taka a matsayin jagora mai ban tsoro, Sabbah ya kasance ƙwararren masanin lissafi, musamman a cikin lissafi, da kuma ilimin taurari da falsafar, musamman a fannin ilimin lissafi.E. G. Brown Literary History of Persia, Vol. 1, p. 201.Nizam al-Mulk Tusi, pg. 420, foot note No. 3 An ba da labarin cewa Hasan da masanin Farisa Omar Khayyam sun kasance abokai na kusa sosai a tun lokacin da suke dalibai. Shi da kowane daga cikin shugabannin Assassin daga baya sun zama sanannun a a yankin Yamma a matsayin Tsohon Mutumin Dutsen, sunan da aka ba wa jagoran ƙungiyar a cikin rubuce-rubucen Marco Polo wanda ya yi nuni da mallakar ƙungiyar na babban sansanin dutse na Alamut Castle .  

 Tushen 
Ana zaton Hasan ya rubuta tarihin kansa, wanda bai tsira ba amma da alama ya haifar da wani  ɓangaren farko na tarihin Isma'ili mai suna Sargozasht-e Seyyednā (Persian). A san wannan a ƙarshe ne kawai daga ƙa'idodin da marubutan Farisa suka yi daga baya. Hasan kuma ya rubuta wani littafi, a cikin Farisa, a kan koyarwar ta'līm, wanda ake kira, al-Fusul al-arba'a  Rubutun ba a san shi ba Yanzu amma al-Shahrastānī da masana tarihi da yawa na Farisa sun ambaci ko fassara raguwa. Farhad Daftary, Ismaili Literature: A Bibliography of Sources and Studies, (I.B.Tauris, 2004), 115. 

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