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What are the seven principles of architecture described in The Seven Lamps of Architecture?

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In his 1849 essay The Seven Lamps of Architecture, the English writer and artist John Ruskin outlined seven fundamental principles, or "lamps," that he believed should guide architectural practice:

  • Sacrifice: The dedication of man's best work to God, as a tribute to His glory.
  • Truth: The honest expression of construction and materials, avoiding deceptive ornamentation.
  • Power: The ability of architecture to evoke a sense of awe through mass and shadow.
  • Beauty: The incorporation of forms derived from nature, which Ruskin viewed as the handiwork of God.
  • Life: The requirement that buildings be created by the human hand, reflecting the vitality of the craftsman.
  • Memory: The preservation of architecture as a link to the past and a legacy for future generations.
  • Obedience: The adherence to established, noble styles—specifically Gothic architecture—rather than the pursuit of arbitrary innovation.1