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Brother Quote by Douglas Adams

“Time, we know, is relative. You can travel light years through the stars and back, and if you do it at the speed of light then, when you return, you may have aged mere seconds while your twin brother or sister will have aged twenty, thirty, forty or however many years it is, depending on how far…” quote by Douglas Adams
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“Time, we know, is relative. You can travel light years through the stars and back, and if you do it at the speed of light then, when you return, you may have aged mere seconds while your twin brother or sister will have aged twenty, thirty, forty or however many years it is, depending on how far you traveled. This will come to you as a profound shock, particularly if you didn't know you had a twin brother or sister.”

Douglas Adams

About This Quote

Source Novel: The Hitchhiker's Guide to the Galaxy, 1979

Relativity means time passes differently for travelers at light speed, causing shocking age differences with those left behind.

In simple terms: Time changes with speed; twins age differently.

Key Takeaway

Consider the consequences of extreme travel.

Themes

science time relativity

Mood

wonderful speculative

Type

science fiction philosophical

When to use this quote

  • space exploration
  • theoretical physics
  • education
  • storytelling

Key Concepts

physics twin paradox cosmic travel

Questions to Reflect On

  • What ethical dilemmas arise from time dilation?
  • How would society handle such age gaps?
A Different Perspective

Practical travel at light speed is currently impossible.

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