Hello, can you hear me? I was born on January 8, 1942, exactly 300 years after the death of Galileo. I was 20 in October 1962 when I arrived in Cambridge at Dampe, the department of Applied Mathematics and Theoretical Physics. I had come to Cambridge to do cosmology, and cosmology I was determined（坚决的） to do. At that time, it became clear something was not quite right with me. The Christmas after arriving in Cambridge I went home. It was a very cold winter and my mother persuaded（说服） me to go skating on the lake in St.Albans.

  I fell over and had great difficulty（ 困难） getting up again. I spent weeks in Bart's hospital and had many tests. They never actually told me what was wrong, but I guessed enough to know it was pretty bad, so I didn't want to ask. The doctor who diagnosed（诊断） me lost his hands of me and I never saw him again.