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:
“The real sin against life is to abuse and destroy beauty, even one’s own—even more, one’s own, for that has been put in our care and we are responsible for its well-being.”
—Katherine Anne Porter (1890–1980)