Archimedes said, "Give me a lever long enough, and a prop strong enough,
and with my own weight I will move the world." "But," says Dr. Arnott,
"he would have required to move with the velocity of a cannon-ball for
millions of years, to alter the position of the earth a small part of an
inch. This feat of Archimedes is, in mathematical truth, performed by
every man who leaps from the ground; for he kicks the world away from
him whenever he rises, and attracts it again when he falls."
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