Jean Baptiste (Pierre Antoine) de Monet, Chevalier de Lamarck [1744-1829], Echinus 136—Tableau Encyclopédique et Méthodique des Trois Regnes de la Nature, Paris 1791-1798. From the pattern library of WikiMechanics.org. Photograph by D Dunlop.
There is more going on than what meets our eyes . . . Prevalent in the major works of Leonardo Da Vinci is 'phi' (also known as the Golden Ratio or the Golden Mean), a ratio of 1:1.618. This is found in nature and creation, and the Fibonacci sequence.