Fiery World - Book 2 (1934) - 11: 11. Some blind people can sense the presence of fire by sound instead of light. Some even prefer to cognize by sound rather than by heat. One may conduct instructive experiments not only upon blind people but also upon heavily blindfolded people. But of course the blindfold may interfere with the general sensitiveness, therefore the testimonies of blind people will be more convincing. The more so since their hearing is usually more acute. They may even testify that the flame of the candle resounds. We have refined our senses in many respects, but the physical deprivation of one sense sharpens the other. The sighted people perceive the song of the fire in a stove, in a bonfire, and in a conflagration, in other words in the crudest manifestation. And besides, people but seldom distinguish the sounding of the fire from the noise of the burning material. Nevertheless it is possible to know the resounding of fire.
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