“Those who think that all sensations reach us through sight and hearing have expressed surprise to see that I could notice, in that rural setting, any difference—except, perhaps, the absence of pavement—between walking on city streets and country roads. It is forgotten that it is my entire body that remains subject to the surrounding conditions. (…) The rolling of wheels on hard pavement and the monotonous noise accompanying the operation of machinery strain the nerves even more if our attention is not distracted by the ever-present panorama of noisy streets in front of those who enjoy sight.”
(Helen Keller, Story of my life)