Some people drift along like a cork on a river, feeling that they cannot do anything except drift, moment to moment. This is an attitude of mind. Everyone can be constructive even in tiny ways.
Edward de BonoIt's always amazed me how little attention philosophers, psychologists, or anyone else actually has paid to humor.
Edward de BonoA 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 Bono