Who said "I was blind before, now I see with terrible clarity"?

This quote is attributed to Charlie Gordon.

I was blind before, now I see with terrible clarity - Charlie Gordon

"I was blind before, now I see with terrible clarity"

Charlie Gordon

Character in Flowers for Algernon

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"The more intelligent you become, the more problems you'll have."

"I want to be smart but not if it means losing the friends I have now."

"It's funny how the same thing can be either beautiful or ugly depending on how you look at it."

"We create our own hell by our actions."