he was interested in EVERYTHING. Curious about all kinds of topics, he continued to ask questions like children of today do (why is the sky blue for example, one he answered in his journals) until his death. He even had long to-do lists filled with odd questions.

He dissected animals and people to study and draw them and fully understand things like how our eyes work as well as how many muscles are involved in creating a smile.

He also regularly drew & dreamed fantastic ideas that were impossible during his time. He had some of the first ideas for scuba diving gear, how to get men to fly, & more

he uncovered how part of the heart works that no one could figure out until the 1970s!

He did city planning, imagined war weapons, studied how water moved, made musical instruments, studied light and how it reflects, and much much more.

He was master on geometry and optics, his paintings aren't just imaginary form of ordinary lines but the combinations of shadows, colors and reflections. 

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