In a platonic tradition, education begins with the idea that, with the proper efforts, nothing can prevent you from a true understanding of anything. Helen Keller is an example of such determination and her books and biography exposed many children (like the author of these lines) to the adversity that persons with disabilities experience in their life, and to the pure joy of overcoming them.
For instance, this deafblind woman describes in a letter her experience of the Symphony No. 9 of Beethoven, directly from the vibration of her fingertip. You can find the full letter on the website letters of notes, and even listen to an audio version.
To promote zero barriers in education is what the Zero Project 2016 was designed for and its purpose is to spread awareness how children with disabilities being educated and included in a regular classroom, could become renowned authors and activists just like Helen Keller.