Book excerpt: Traditionally, the university or college is thought to be the ultimate location for the discovery and sharing of knowledge. After all, on these campuses are some of the great minds across all fields, as well as students who are not only eager to learn, but who often contribute to our shared wisdom. For those ideals to be achieved, however, ideas require access to some kind of virtual marketplace from which people can sample and consider them, discuss and debate them. Restricting the expression of those ideas for whatever reason is the enemy of not only this process, but also of knowledge discovery. Speech freedom on our college and university campuses, like everywhere else, is fragile. There are those who wish to suppress it, more often than not when the words express ideas, opinions, and even facts that conflict with their beliefs. Why is this effort, so completely at odds with the foundational values of this country, made? This topic explored in Speech Freedom on Campus: Past, Present and Future is multi-layered, and its analysis is best accomplished through multiple perspectives. Joseph Russomanno’s edited collection does precisely that, utilizing 10 different scholars to examine various aspects and issues related to speech freedom on campus.