In the public debate about our penal system, prison libraries tend to be a point of controversy. Some critics worry that tax money is misspent on coddling convicted felons. Some go further, and stoke public fear that prison libraries are giving violent convicts access to materials that will incite them. ... The problem with the public discussion about libraries in prison is that it’s the wrong discussion. For over a century now, the debate has centered on reading — on which books should, or more often should not, be included on the prison library’s shelves; which books are “harmful” or “helpful”; whether reading is a privilege or a right.