To unravel the magic of the Mona Lisa, you have to look at her hands and the proportions between her face and her "décolleté". Her smile gives direction for the rotation of the vertical "8", for the position of the hands, we can recognise the form of a trefoil knot. Both structures symbolise and represent infinite dynamic motions.
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Word is that Leonardo chose the gesture for her right hand in lieu of a wedding ring to depict Lisa as a virtuous woman and faithful wife. I think it's amazing that the composition is in such a way that it fits perfectly with the 8 and the Trefoil knot ... as we know Leonardo was all about mechanics and motion (dynamics).
