- the speed of light.
- 1994 - Ursula K. Le Guin, A Fisherman of the Inland Sea. Victor Gollancz (UK), 1996. ISBN 0575602392. Page 7.
- :If we're going to a world a hundred light-years from here at near lightspeed, we spend according to our own perceptions, only a few minutes doing so and arrive only a few minutes older.
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