The Elements of Perspective arranged for the use of schools and intended to be read in connection with the first three books of Euclid

John Ruskin

《The Elements of Perspective arranged for the use of schools and intended to be read in connection with the first three books of Euclid》，John Ruskin。这是一部关于科学、艺术、文学的公版作品，适合在安静的片刻里慢慢读下去。