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"We'd have most of what we predicted of the conquest of space, if we hadn't ignored parasite control."
- Larry Niven

Gravity Drive  
  A spaceship propulsion method that uses gravity or gravity waves.  

First use of this phrase.

None of them had ever built a rocketship, had ever seen one in action even. It was centuries obsolete in Galactic civilization. But gravity drives were out of the question. So - they'd had to design the ship from the ground up.
From Star Ship, by Poul Anderson.
Published by Planet Stories in 1950
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