A person who knows all the answers, has an opinion on everything, has a certainty backed up by rational argument, has very little possibility of further progress. Such a person is unlikely to walk away from a discussion with anything more than a reaffirmation of how right he or she has been all along.
Edward de BonoExplaining belief has alwayas been difficult. How do you explain a love and a logic at the heart of the universe when the world is so out of whack? Explaining faith is impossible - vision over visibility - instinct over intellect - a songwriter plays a chore with the faith that he will hear the next one in his head.
Edward de Bono