the facts are stark enough without decoration. in 1963 stephen hawking was 21, a cambridge graduate student noticing he'd started stumbling and dropping things. the tests came back: motor neurone disease — als — which progressively destroys the nerves controlling voluntary movement. by his own later account, the doctors' estimate was about two years.
what followed first was, in his own telling, a depression — what's the point of the phd if you won't live to finish it. and also, in another of his tellings, something stranger: he said that before the diagnosis he had been bored with life, and that the prospect of an early death made him realise it was worth living. both accounts are his, from different years. they don't cancel out. a winter can hold both.
then he simply kept working, on a timeline that kept refusing to obey the estimate. married jane wilde in 1965. finished the phd in 1966 — a year after the deadline he'd been given for being alive. through the seventies, as his speech slurred and walking went and the wheelchair became permanent, the physics got bigger: in 1974 he showed that black holes leak radiation and slowly evaporate — hawking radiation, still one of the most cited results in theoretical physics. in 1979 he was given the lucasian chair at cambridge, the one newton held, and kept it for thirty years.
1985 brought the second cliff: pneumonia, and an emergency tracheostomy that saved his life and permanently ended his speech. he rebuilt again — a computer voice, chosen letter by letter, in his last years steered by a single cheek muscle. the flat electronic voice became one of the most recognised on earth. three years after losing his own, he published a brief history of time (1988), and it sold in the millions. he kept working, writing and provoking until he died in march 2018, at 76 — roughly 55 years into a disease measured for him in months.
two of his own sentences carry the winter better than any commentary. from 2004: 'my expectations were reduced to zero when i was 21. everything since then has been a bonus.' and from 2006: 'however bad life may seem, there is always something you can do and succeed at.' honest notes: the two-year estimate is his own retrospective account, not a preserved document; the famous version of that last quote — with 'difficult' softened in where he said 'bad' — is a misquote; the sourced wording is 'however bad'. and he explicitly disliked being cast as an inspiration for having a disability; he wanted to be read as a scientist. his marriages ended in divorce, twice, and that's stated plainly and left alone.