We ought study history because"history reminds us that actions and ideas have consequences not only in our own generation but also for generations to come. What we believe, teach and practice affects future generations of believers. Therefore history helps us to not act or teach impulsively. We must employ caution. We must enter into self-criticism and self-evaluation. History helps keep us from taking ourselves too seriously, as if we had all the best answers. At the same time history helps us take ourselves very seriously, because we affect others." -- D. Jeffrey Bingham, Pocket History of the Church, p. 11.