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Speech has allowed the communication of ideas, enabling human beings to work together to build the impossible.

In plain words

Talking to each other is how humans build things no one could build alone.

Where these words come from

How sure this is
50% 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
From a British Telecom advertisement voiced by Hawking (1993); one complete sentence excerpted from a longer scripted passage, likely ad-agency-written.
Work
British Telecom advertisement
Occasion
1993 · UK television · Ad about the power of communication, later sampled by Pink Floyd
Sources checked
  • en.wikiquote.orgChecked using claude-sonnet-5, 21 August 2026Sourced, British Telecom ad 1993 (later sampled in Pink Floyd's 'Keep Talking')

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