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:
“No country is so peaceful as the one that leads into death. Life arches above one’s head like a bridgespan, and below it flows the water, carries the boat, takes it further.”
—Alfred Döblin (1878–1957)