a1 Université du Québec, Montréal
Since I wrote my doctoral dissertation lo! these forty-seven years ago under Professor Quine, my colleague Alain Voizard thought it fitting that I comment on the paper just delivered. The invitation flattered me, I confess, as did Professor Quine's choice of a subject: free logic, a logic of which I was one of the numerous fathers thirty-five years ago. So, it is in my capacity as a commentator that I address you now, saving for tomorrow afternoon further thoughts prompted by this colloquium.