"Years after he took that pill in Ibiza, Grammy nominee Mike Posner left behind his life in L.A. to go on a 2,851-mile journey in search of... something. Here's what he learned about grief, motivation, struggle, and authenticity."
You can listen to this one-minute video and just enjoy the pleasing sounds, rhythm and simple language, or you can dig a little deeper and read the SparkNotes analysis linked below. Either way, it's a taste of Robert Frost (1874-1963), winner of four Pulitzer Prizes for poetry, and one of America's most beloved poets.
Left to your own devices, how would you classify fish? Fresh water versus salt water, ones you buy in the market versus ones you see on vacation? This Wikipedia entry does it by these categories: habitat, lifespan, size, breeding behavior, brooding behavior, feeding behavior, vision, shape, locomotion, toxicity, human use, vulnerability and "other" (you really need to check out the "other").