Stephen Hawking , the famous physicist ,
was born in Britain on January 8th , 1942 . As
a child , he was enthusiastic about designing
complicated toys but unfortunately , in his
twenties ,he suffered from a disease that was
impossible to be cured , which was a great
challenge for him . However , not only was he
positive about his misfortunes and eventually
he defeated all the obstacles but also he was
absorbed in his research in the universe . In
1998 , his best-seller A Brief History of Time
was
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