Crossword puzzle clue "roman who said any man can make mistakes but only an idiot persists in his error"

Roman who said "Any man can make mistakes, but only an idiot persists in his error"

The idiot brother in "Our Idiot Brother"

She said "You can lead a horticulture, but you can't make her think"

Activist who said "You can kill a man but you can't kill an idea"

It's said that he said, "I never said most of the things I said"

It can make mean men, but it can't make men mean

[yeah, I make mistakes, but not like this one]

"But I can't decide on the last note!" said Johnny, pointing at his score. "Everything I try sounds like it has a ___. It's not even close to being on target."