the gilder lehrman center hosted this event. it is 1:45. >> okay. good afternoon, everyone. good afternoon, everyone. i was in a bunch of southern churches recently. you either do it right or you don't do it. you know? welcome. i am david blight, director of the gilder lehrman center for the study of slavery, resistance and abolition. this is the lecture series, we founded, i don't know, at least, six, seven years ago now in honor of my colleague, david brian-davis in the front row. david was the founder of the center some 13 years ago. and another way of putting it, the center was founded around david's work. which is still where everyone goes to understand, especially, the intellectual history of the problem of slavery in the world for that matter. david was doing a kind of transnational history of this before anyone ever used the word transnational. so, welcome, david. and, we have done this in many different forms. we have had a single lecture. go away people, three, four days in a row. we have had panels. we have had series of lectures and so forth. some times we produc