. >> lisa warren is vice president of de capo press. >> up next a history of accretion of the erie canal which expedited expansion of the united states and facilitated trade with the american west, author of gerard koeppel recounts the canals development and how did establish new york city as america's economic center. this event hosted by borders bookstore in new york city is 40 minutes. >> i am going to talk about 30 minutes and maybe have time for a few minutes of q&a afterwards. it wasn't my idea to write this book editor who asked my agent if he knew someone who could write a book about the erie canal and agent said, yes, the guy who had written a book about new york city is what our history and the editor said great and my agent called me and i said why? what is there possibly new to write about it able but long irrelevant canal? can 1 million history at vytorin and folklore? dozens of books have been written about. in recent decades hurt children and maybe that is of program anymore for the old readers. but my age of answer the question why by saying when a major publisher wants t

. >> lisa warren is vice president of a de capo press. >> up next, author bill ayers, distinguished professor of education as you university scholar at the university of illinois at chicago joins booktv for an in-depth interview from the printer's row of little vest in chicago. >> bill ayers, in your book "to teach" you talk about teachers having a world choice. what is that moral choice? >> i think that teaching is profound ethical work in the moral choice is to choose to take the side of the students, to choose to see them as three-dimensional creatures with hearts and minds and spirits, that somehow have to be both martian challenged and to see yourself as something which is in the position of shepherding the choices of others and that gives you a very profound i think ethically responsibility so part of it is to see the students whole, to see them as human beings not as interchangeable cog in a machine, that is infinitely manipulable but see them as human beings much like yourself and to open your eyes to that. >> is individuals? >> and as members of the committee both and that is one of