

Though his notes suggest that he wished to organize and publish his ideas, he died before he could accomplish this important goal.

But it seems the very few of these were ever built and tested during his life.

Leonardo described and sketched ideas for many inventions hundreds of years ahead of their time. Five hundred years after they were put on paper, many of his sketches can easily be used as blueprints to create perfect working models. His talents as an illustrator allowed him to draw his mechanical ideas with exceptional clarity. Leonardo set out to write the first systematic explanations of how machines work and how the elements of machines can be combined. By studying them he gained practical knowledge about their design and structure. As an apprentice in the studio of the artist Verrocchio, Leonardo observed and used a variety of machines. Some of his earliest sketches clearly show how various machine parts worked. Leonardo's fascination with machines probably began during his boyhood.
