Hello! every body, I am mizanur Rahman. This is my 4 post.

Stephen Hawking is considered the greatest physicist Einstein. He gradually started losing control over the muscles of his body as he gradually became a victim of Gehrig's disease.

Since the age of thirty, he has been confined to wheelehair with no power to control his body except for some limited movement of his head and hands only.

He can speak only through a computer with a voice synthesizer that vonverts this message into sound. But such a tremendous physical handicap has not managed to dishearten or slow him down.

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