Mark J. Estren '70 coauthored " (Ronin Publishing, October 2012), in which he and Beverly A. Potter who, like Estren, has a Ph.D. in psychology explore pressures to conform and how to overcome them by determining your own core values and deciding whether commonly held beliefs are in accord with what matters deeply to you. The book shows how to question your internal, barely perceived "authority," in the form of beliefs and assumptions you have long accepted as facts, as well as external authorities and how to defuse powerful anti-thinking weapons, such as ostracism and ridicule.