I never knew that in this drawing Leonardo was trying his hand at illustrating a well-known passage from Vitruvius, thus the name. Leonardo was interested in h

I never knew that in this drawing Leonardo was trying his hand at illustrating a well-known passage from Vitruvius, thus the name. Leonardo was interested in human proportions, and made a lot of notes of comparative anatomy, motivated mostly I think by his interest in accurate artistic depictions. I have used the Vitruvian Man to remember that my arm-span is roughly the same as my height, when it comes to estimating measurements.