But his feeling of nature was greater than his knowledge of perspective; and it is delightful to see how he has rooted the whole leaf in the strong rounded under-stem, the indication of its closing with its face inwards, and has thus given organization and elasticity to the lovely group of spiral lines; a group of which, even in the lifeless sea-shell, we are never weary, but which becomes yet more delightful when the ideas of elasticity and growth are joined to the sweet succession of its involution.
The Stones of Venice, Volume II (of 3)
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John Ruskin