Daniel Behrman

"The world lies right beyond the handlebars of any bicycle."

Daniel Behrman, The Man Who Loved Bicycles: The Memoirs of an Autophobe. Harper's Magazine Press (1973)

Helen Keller

"Toleration is the greatest gift of the mind; it requires the same effort of the brain that it takes to balance oneself on a bicycle."

Helen Keller

Ernest Hemingway

"It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them.

"Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle."

Ernest Hemingway, By-Line: Selected Articles and Dispatches of Four Decades

Albert Einstein

"I thought of that while riding my bike."

Albert Einstein, explaining where he got his theory of relativity

"Life is like riding a bicycle. To keep your balance you must keep moving."

Albert Einstein, February 5, 1930, in a letter to his son Eduard.