Cycling
Get a bicycle.  You will not regret it if you live.  Mark Twain
Nothing compares to the simple pleasures of a bike ride  John F. Kennedy
The bicycle is a curious vehicle.  Its passenger is its engine.  John Howard
Melancholy is incompatible with bicycling  James E. Starrs
Cycling is unique.  No other sport lets you go like that - where there's only the bike left to hold you up.  If you ran as hard, you'd fall over.  Your legs wouldn't support you.  Steve Johnson