65% sureLots of sources credit Stephen Hawking with this, and they agree with each other. The book or the speech it first came from hasn't turned up yet.
What turned up
Quoted in Kristine Larsen's scholarly biography Stephen Hawking: A Biography (2005), p.43; published in his lifetime but original interview source unconfirmed.
Work
Stephen Hawking: A Biography (Kristine Larsen)
Occasion
2005 · Cambridge · Discussing his visual/geometric approach to physics
Sources checked
en.wikiquote.orgChecked using claude-sonnet-5, 21 August 2026Sourced list, Larsen biography 2005
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