My brother says I ruined his life because I am a girl and I was smarter in school that he was. What to do?

There were a lot of boys in my family and then me. So in a way, I was a favored child, being the only girl. I was very bright and strong and could do just about anything well that I tried. The brother in question is less than a year older than I am. I think he felt over looked. He also has a learning disability. We fought as siblings do, but always made up when we were young. After being abandoned by our mother, he turned against me with a vengence. He was 9 and I was 10. A year later, our Dad died and it got even worse. He blames all his woes on me. Gave me a long list of offenses like - my friend said something to him that hurt his feelings when we were kids, or that I used to pound on him when we were little, or that because I got good grades, I made him feel stupid. He says he hates me. We are past middle age now and this only came out a few years ago. Now he won't speak to me! What can I do?