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You know, several years ago, I was in New York City autographing the first book that I had written. And while sitting there autographing books, a demented black woman came up. The only question I heard from her was, “Are you Martin Luther King?” And I was looking down writing, and I said, “Yes.” And the next minute I felt something beating on my chest. Before I knew it I had been stabbed by this demented woman. I was rushed to Harlem Hospital. It was a dark Saturday afternoon. And that blade had gone through, and the X-rays revealed that the tip of the blade was on the edge of my aorta, the main artery. And once that’s punctured, your drowned in your own blood — that’s the end of you.

It came out in the New York Times the next morning, that if I had merely sneezed, I would have died. Well, about four days later, they allowed me, after the operation, after my chest had been opened, and the blade had been taken out, to move around in the wheel chair in the hospital. They allowed me to read some of the mail that came in, and from all over the states and the world, kind letters came in. I read a few, but one of them I will never forget.

Dear Dr. King,

I am a ninth-grade student at the White Plains High School.”

And she said,

While it should not matter, I would like to mention that I’m a white girl. I read in the paper of your misfortune, and of your suffering. And I read that if you had sneezed, you would have died. And I’m simply writing you to say that I’m so happy that you didn’t sneeze.

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Dr. Martin Luther King Jr.

http://www.americanrhetoric.com/speeches/mlkivebeentothemountaintop.htm