The problem is that no ethical system has ever achieved consensus. Ethical systems are completely unlike mathematics or science. This is a source of concern.
Daniel DennettThere is no polite way to suggest to someone that they have devoted their life to a folly.
Daniel DennettIf the history of resistance to Darwinian thinking is a good measure, we can expect that long into the future, long after every triumph of human thought has been matched or surpassed by 'mere machines,' there will still be thinkers who insist that the human mind works in mysterious ways that no science can comprehend.
Daniel DennettWhile we tend to conceive of the operations of the mind as unified and transparent, they're actually chaotic and opaque. There's no invisible boss in the brain, no central meaner, no unitary self in command of our activities and utterances. There's no internal spectator of a Cartesian theater in our heads to applaud the march of consciousness across its stage.
Daniel Dennett