“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.”
“Next to a leisurely walk I enjoy a spin on my tandem bicycle. It is splendid to feel the wind blowing in my face and the springy motion of my iron steed. The rapid rush through the air gives me a delicious sense of strength and buoyancy, and the exercise makes my pulse dance and my heart sing.”
I’ve written a bit about cycling for the blind in the context of a blog post about tandems.