the most famous was written about in a wonderful play called long day's journey into night by eugene o'neill. that's about his family, and that's about his mother who became a morphine addict accidentally after the birth of eugene o'neill when she went into postpartum depression and could never get that monkey off her back. so there was a lot of -- i don't want to judge, well, in the case of the bosses on docks i will, but in the case of the doctors, i don't want to judge them, but they weren't really thinking it through, and they didn't have enough information based on what they were doing, and they unwittingly or wittingly created an epidemic of substance abuse that we've never recovered from. >> thank you. >> yes, well, thank you for this wonderful book, and, um, i'm wondering what you do with the question of what influence did addiction have on freud's theories. >> uh-huh. >> both in terms of his working productivity and how much he put out, the time in which he produced them, and then also the kind of work that he produced. so it's very interesting to me, for example, that freud is a lo