Sentence:  It is not to be doubted that intimacies with English freethinkers at this period, and with French deists and atheists at a later stage in his life, did much to engender those <WSD>latitudinarian</WSD> sentiments upon religious subjects which Franklin is known to have entertained. 
Meaning of the word marked with <WSD> tags:  Tolerant, especially of other people's religious views.