I thought a lot about the beauty of Leonardo's Mona Lisa, we have two expressions that are composed on the same icon: usually to express an expression our whole body moves in that direction, to create another expression we need a different time. These two times, the sadness and the smile, which point out our duality are characterized at the same time. It creates a displacement. It's as if we could not grasp both things together. Hence the perception of that extraordinary beauty.