What does the quote a person who won't read has no advantage over one who can't

Basically, the quote is saying if someone has the ability to do something but chooses not to do it, then they are no better than someone who isn't able to it.

Explanation:

The quote uses reading as an example. One who sees and has the ability to read but chooses not to read is not better than a blind person or someone who doesn't know how to read.