Overall thoughts: this is such a shockingly original work that no wonder it caught on slowly, and we can certainly forgive all errors and infelicities of presentation. #WSJevons (mentioned above) led one response by acknowledging #Boole 's insights but trying to fold them into the old paradigm. But with developments such as emphasing inference over equality, abandoning partially defined connectives, and new quantifiers to allow binary+ relations, the formal approach to #logic was unstoppable.