and because in charles darwin's masterpiece, this is a tahitian masterpiece the last great piece he did and in the upper left hand corner, this philosophically inclined artist wrote, it is in drench but i will tell you what he said. >> rose: tell me what he said. >> he wrote up there, where do we come from? what are we? where are we going? he boldly asked the questions that philosophers long ago abandoned and which science now is left to try to answer. >> rose: you like the big questions, don't you? >> well, when you only have several years left of your life, ask them now or never. >> rose: social conquest of earth, edward o. wilson, e o. wilson of harvard. one of my favorites. >> rose: i am pleased to have dr. eric kandel back at this table where he comes frequently, welcome. >> nice of you to have me here. >> rose: the age of insight, why call it the age of insight? >> in the 1900 was a very special period, at the end of the 1900s in which our view of human kind was altered. before that, there was a view of human beings as being essentially rational creatures, specially created by god