The attribution to Bernard of Chartres is due to John of Salisbury. In 1159, John wrote in his "Metalogicon": "Bernard of Chartres used to compare us to dwarfs perched on the shoulders of giants. He pointed out that we see more and farther than our predecessors, not because we have keener vision or greater height, but because we are lifted up and borne aloft on their gigantic stature." However, according to Umberto Eco, the most ancient attestation of the phrase dates back to Priscian cited by Guillaume de Conches.