After your first day of cycling, one dream is inevitable. A memory of motion lingers in the muscles of your legs, and round and round they seem to go. You ride through Dreamland on wonderful dream bicycles that change and grow. – H.G. Wells, The Wheels of Chance

Life is like riding a bicycle; we can keep from falling if we keep moving. Only a few trick-riders can stand still and not tumble. – Author Unknown, c.1922

Bicycling is the nearest approximation I know to the flight of birds. The airplane simply carries a man on its back like an obedient Pegasus; it gives him no wings of his own. – Louis J. Helle, Jr., Spring in Washington

With humans, it is like the bicycle. Only when moving can we easily keep balanced. – Albert Einstein, letter to son Eduard, 1930 February 5th, translated from German