A little wonder, every day
Leonardo wrote with both hands
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Leonardo’s dated Arno Valley landscape drawing, 5 August 1473. Original page: https://commons.wikimedia.org/wiki/File:Paisagem_do_Arno_-_Leonardo_da_Vinci.jpg. Creator: Leonardo da Vinci; collection: Uffizi. File page marks the drawing and reproduction public domain / Public Domain Mark 1.0.
A study of Leonardo’s dated 1473 drawing found two inscriptions attributed to him: the one on the front is mirrored, while the one on the back reads normally. Researchers conclude that Leonardo wrote the first with his left hand and the second with his right; this shows that he used both hands, but does not prove they were equally skilled.

