Send a Quote Enter a brief message. SendOk2 “There are in fact four very significant stumblingblocks in the way of grasping the truth, which hinder every man however learned, and scarcely allow anyone to win a clear title to wisdom, namely, the example of weak and unworthy authority, longstanding custom, the feeling of the ignorant crowd, and the hiding of our own ignorance while making a display of our apparent knowledge.” ~ Roger Bacon (1220-1292)Source: Opus Majus, 1266-67