The human understanding, when it has once adopted an opinion…draws all things else to support and agree with it. And although there be a greater number and weight of instances to be found on the other side, yet these it either neglects or despises…in order that by this great and pernicious predetermination the authority of its former conclusions may remain inviolate.
Francis Bacon, Novum Organum, 1620 (via Drew Westen)