"The Divine Proportion, or Golden Ratio, is equal to (sqrt(5)+1)/2,

approximately 1.61803. It appears frequently in nature, the ancient Egyptians

probably knew about it, the ancient Greeks certainly knew about it, and the

artists and architects of renaissance Europe were obsessed with it.

Moleskine "pocket" notebooks are 9x14cm in size, only 4% from the Golden

Ratio (the long side is approximately 5mm short). A size of 8x13cm would be even

closer (within 0.5%) but would have 17% less area per page. 8.9×14.4cm would be

closer still (within 0.004%) but would not have the convenience of

whole-centimetre dimensions. 9x14cm therefore represents a balance between

useful area, pocketable size and convenient dimensions while remaining very

close in aspect ratio to the long-held ideal. The "large" notebooks, at 13x21cm,

are within 0.2%…"

The Divine Moleskine

newearth

*[Thanks Joy!]*