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With current technology interstellar travel is utterly impractical. Alpha Centauri can never become a holiday destination.

— Stephen Hawking Brief Answers to the Big Questions (2018)

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More quotes by Stephen Hawking

Although September 11 was horrible, it didn't threaten the survival of the human race, like nuclear weapons do.

The whole history of science has been the gradual realization that events do not happen in an arbitrary manner, but that they reflect a certain underlying order, which may or may not be divinely inspired.

A Brief History of Time (1988)

I still believe there are grounds for cautious optimism that we may now be near the end of the search for the ultimate laws of nature.

A Brief History of Time (1988)

Disorder increases with time because we measure time in the direction in which disorder increases.

A Brief History of Time (1988)

In a world that is in chaos politically, socially and environmentally, how can the human race sustain another 100 years?

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In imitating the exemplary acts of a god or of a mythic hero, or simply by recounting their adventures, the man of an archaic society detaches himself from profane time and magically re-enters the Great Time, the sacred time.

Mircea Eliade Myths, Dreams and Mysteries (1967)

In your journey, be prepared to encounter an array of obstacles – some steep, some flat – for that's the nature of the path.

Sanu Sharma

Travellers like poets are mostly an angry race.

Richard Francis Burton

All journeys end in disappointment if for no other reason than that they end.

Lucius Shepard

Attribution

Quote text and notes from Wikiquote: Stephen Hawking (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.