In popular cultures, "Extraterrestrials" are life forms — especially intelligent life forms— that are of extraterrestrial origin (often also called "aliens").
Famous quotes containing the word life:
“Life isn’t meant to be easy. It’s hard to take being on the top—or on the bottom. I guess I’m something of a fatalist. You have to have a sense of history, I think, to survive some of these things.... Life is one crisis after another.”
—Richard M. Nixon (1913–1995)