" Quiet can be difficult to quantify—it's easier to think of loud in relative terms. A rock concert is louder than a string quartet; a jet engine is louder than a car engine; a couple have sex on the other side of the hotel wall last night was louder than my TV, so I made my TV louder. "

― Conor Knighton , Leave Only Footprints: My Acadia-to-Zion Journey Through Every National Park