It wasn’t Helen Keller
Thank you to Robin Gardner of Haenertsburg, South Africa who e-mailed to say that the quote attributed to Helen Keller in the previous post was actually said by Edward Everett Hale 1822-1909 as is explained here
The correct information about Keller is here
The wrong info appears here here and here
Thank you Robin, good to see my words are not accepted just because I am beautiful!