Which Medieval philosopher was considered the keenest thinker, whoes love letters were published by Constant Mews?    
Constant Mews:  He discovered and published what are possibly the original letters exchanged between Peter Abelard and his lover, Heloise. Peter Abelard:  The "Chambers Biographical Dictionary" describes him as "the keenest thinker and boldest theologian of the 12th Century".
i don't know