> "Beware of first-hand ideas!" exclaimed one [...] "First-hand ideas do not really exist. They are but the physical impressions produced by love and fear, and on this gross foundation who could erect a philosophy? Let your ideas be second-hand, and if possible tenth-hand, for then they will be far removed from that disturbing element — direct observation."
– E.M. Forster's 1909 short story "The Machine Stops"