Helen Keller was an amazing person in so many ways!
I have a couple of videos about her in The Best Videos Illustrating Qualities Of A Successful Language Learner to demonstrate the qualities of having an appetite for learning and/or perseverance.
Here they are:
The first video is one of her and Mary Ann Sullivan demonstrating how she learned to communicate. The second one is a video clip from a film version of The Miracle Worker:
— NYT Archives (@NYTArchives) June 27, 2017