Why do we say "What goes up must come down.

Well-Known Expressions

What goes up must come down


However high something rises, eventually it has to come back down.


The general consensus seems to be that this proverb originated around the 1870s and is a reference to Newton's 2nd law. It first appeared in print in 1929 in The Stretchers: The Story of a Hospital Unit on the Western Front by F. A. Pottle.

Alphabetical list of expressions

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