Motorways of Pakistan Motorways of Pakistan Motorways of Pakistan () are a network of multiple-lane, high-speed, controlled-access highways in Pakistan, which are owned, maintained and operated federally by Pakistan's National Highway Authority. 1010 km of motorways are currently operational as of 4 February 2017, while 3690 km are currently under construction. All motorways in Pakistan are pre-fixed with the letter 'M' (for "motorway") followed by the unique numerical designation of the specific highway (with a hyphen in the middle), e.g. "M-1". Pakistan's motorways are part of Pakistan's "National Trade Corridor Project", which aims to link Pakistan's three Arabian Sea ports (Karachi Port, Port
Standing on the shoulders of giants Standing on the shoulders of giants The metaphor of dwarfs standing on the shoulders of giants () expresses the meaning of "discovering truth by building on previous discoveries". This concept has been traced to the 12th century, attributed to Bernard of Chartres. Its most familiar expression in English is by Isaac Newton in 1675: "If I have seen further it is by standing on the shoulders of Giants." 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