Marx speculated that in a communist society an individual would fish in the morning, raise cattle in the afternoon and criticize in the evening. This same spirit marked the life of Leonardo who drew, painted, and invented machines.
In addition he was an anatomist, color theorist and so much more. Filmmaker Ken Burns captures his life in a two part, four hour documentary. Read all about this in the World Socialist Website excellent film review.
Enjoy article in WSWS