SONDER: 

the realization that each random passerby is living a life as vivid and complex as your own- populated with their own ambitions, friends, routines, worries, and inherited craziness - an epic story that continues invisibly around you like an anthill sprawling deep underground, with elaborate passageways to thousands of other lives that you’ll never know existed , in which you might appear only once, as an extra sipping coffee in the background , as a blur of traffic passing on the highway, as a lighted window at dusk