Help. Can anyone on DU identify the source for this quote?

[Viva_Daddy]

“No one is so blind as those who REFUSE to see. No one is so dumb as those who REFUSE to speak out.” -Anon

I thought of it this morning while tweeting but it "feels like" I must have read it somewhere, but can't recall where.

Please help me identify the source. If no one comes up with it, I'll have to own it.

[GeorgeGist]

1. Matthew Henry

[Cerridwen]

2. I found this. Perhaps it will help.

THE OLD BIBLICAL QUOTE THAT’S NOT IN THE BIBLE:

“None so blind as those that will not see.”
Matthew Henry (1662-1714)
English Presbyterian minister and writer
A saying popularized by Henry’s use in his Commentary on the Whole Bible (1708)
Contrary to common belief, this is not a quote from the Bible. It’s a proverbial English saying with no clear origin. Matthew Henry helped popularize it by using it several times in his widely-read book of explanatory comments about the Bible. The saying was probably inspired by Bible verses, possibly Matthew 13:13 (“Therefore I speak to them in parables: because they seeing see not…”) or Jeremiah 5:21 (“Hear now this, O foolish people, and without understanding; which have eyes, and see not…”).



THE LAME EXCUSE VARIATION:

“There are none so lame as those who will not walk.”
Sir James Marchant (1867-1956)
British philanthropist and author
In the book If I Had Only One Sermon to Preach (1928)

At this link: http://www.quotecounterquote.com/2011/04/none-so-blind-as-those-that-will-not.html

[hlthe2b]

3. Proverb variously attributed to Edmund Burke or George Santayan (my fav)

There are none so blind as those that will not see[1] — attributed variously to Edmund Burke or George Santayana

http://en.wikipedia.org/wiki/List_of_proverbial_phrases