▁the ▁thought ▁of ▁Thomas ▁Aqu inas . ▁He ▁produced ▁two ▁major ▁ex eg et ical ▁studies ▁of ▁Thomas ▁Aqu inas : ▁Grace ▁and ▁Fre edom , ▁and ▁Ver bum : ▁Word ▁and ▁Ide a ▁in ▁Aqu inas . ▁ ▁Works ▁ ▁The ▁University ▁of ▁Toronto ▁Press ▁is ▁in ▁the ▁process ▁of ▁publishing ▁L on er gan ' s ▁work ▁in ▁a ▁project ed ▁ 2 5 - volume ▁series , ▁Collect ed ▁Works ▁of ▁Bernard ▁L on er gan . ▁Arch ival ▁materials ▁are ▁available ▁at ▁b ern ard lon er gan . com . ▁ ▁Grace ▁and ▁Fre edom ▁L on er gan ' s ▁doctor al ▁dis sert ation ▁was ▁an ▁expl oration ▁of ▁the ▁theory ▁of ▁oper ative ▁grace ▁in ▁the ▁thought ▁of ▁Thomas ▁Aqu inas . ▁His ▁director , ▁Charles ▁Bo yer , ▁S . J ., ▁pointed ▁him ▁to ▁a ▁passage ▁in ▁the ▁Sum ma ▁the ologia e ▁and ▁suggested ▁that ▁the ▁received ▁interpret ations ▁were ▁mistaken . ▁A ▁study ▁of ▁Thomas ▁Aqu inas ▁on ▁divine ▁grace ▁and ▁human ▁freedom ▁was ▁well - su ited ▁to ▁his ▁interest ▁in ▁working ▁out ▁a ▁theoretical ▁analysis ▁of ▁history . ▁The ▁dis sert ation ▁was ▁completed ▁in ▁ 1 9 4 0 ; ▁it ▁was ▁re written ▁and ▁published ▁as ▁a ▁series ▁of ▁articles ▁in ▁the ▁journal ▁The ological ▁Studies . ▁The ▁articles ▁were ▁edited ▁into ▁a ▁book ▁by ▁J . ▁Pat out ▁Burn s ▁in ▁ 1 9 7 2 , ▁and ▁both ▁the ▁re vised ▁and ▁the ▁original ▁version