Using a list he wrote in the 1490s:
Robert Krulwich marvels at Leonardo's scattered thoughts:
Minds that break free, that are compelled to wander, can sometimes achieve more than those of us who are more inhibited, more orderly…
Maggie Koerth-Baker observes humility in the great genius:
I think it's pretty interesting that of the nine tasks shown, six involve consulting and learning from other people. Leonardo da Vinci needs to find a book. Leonardo da Vinci needs to get in touch with local merchants, monks, and accountants who he hopes can help him better understand concepts within their areas of expertise.
Leonardo da Vinci knows he doesn't know everything.
The Dish 