Swing

Never mistake motion for action.

~ Ernest Hemingway

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I really like the above quote.  There are lots of people in motion without really taking action.

Similarly, though, don't mistake stillness for inaction.  Sometimes being still is the most powerful action a person can make.

And don't mistake someone sitting on a swing as someone in motion, because they might not be swinging, they might just be sitting there.  And don't mistake them for someone not in motion because they could decide to swing right as you're walking behind them and you could chip a tooth.