Yes, it makes sense. However, you've just emphasized some words in the original quotation.
This discussion may help you. Please note that it's believed the originator was Edward Everett Hale.
http://en.wikiquote.org/wiki/Edward_Everett_Hale
Note the last line of the original quote.
Here is my meaning of Hellen Keller's quote:
It means that by using my voice I can do something. I may not be THE one but AT LEAST I AM one. I know that I can't do everything but the thing is, I CAN do SOMETHING. I will do what I can do to make a difference.
I don't know if that make sense or not, I have to give this speech tomorrow and I'm kind of struggling with the conclusion.
3 answers
Is there a different way to explain the meaning of the quote?
Each person can do something to help others.