Who said "Humanity must become spacefaring or face extinction"?

This quote is attributed to Thomas Wade.

Humanity must become spacefaring or face extinction - Thomas Wade

"Humanity must become spacefaring or face extinction"

Thomas Wade

Character in The Three-Body Problem

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"The universe is a dark forest. Every civilization is an armed hunter stalking through the trees like a ghost."

"Science has no borders."

"To be human is to be afraid."

"Humanity's greatest weakness is our inability to truly comprehend the vast scale of the cosmos."