“Our several senses, which feel so personal and impromptu, and seem at times to divorce us from other people, reach far beyond us. They’re an extension of the genetic chain that connects us to everyone who has ever lived; they bind us to other people and to animals, across time and country and happenstance. They bridge the personal and the impersonal, the one private soul with its many relatives, the individual with the universe, all of life on Earth. In REM sleep, our brain waves range between eight and thirteen hertz, a frequency at which flickering light can trigger epileptic seizures. The tremulous earth quivers gently at around ten hertz. So, in our deepest sleep, we enter synchrony with the trembling of the earth. Dreaming, we become the Earth’s dream.”  – A Natural History Of The Senses, Diane Ackerman