“A man who don't know history, he don't know anything.”
“If you don't know history, then you don't know anything. You are a leaf that doesn't know it is part of a tree. ”
“If you [don't] know history, then [you don't] know anything. You [are] a leaf that [doesn't] know it [is] part of a tree.”
“Those who don't know history are doomed to repeat it.”
“Too many people who don't know anything about anything say too much about what they don't know.”
“I don't know anything, I never did know anything, but now I know I don't know anything!”