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:
“We are all conceived in close prison; in our mothers’ wombs, we are close prisoners all; when we are born, we are born but to the liberty of the house; prisoners still, though within larger walls; and then all our life is but a going out to the place of execution, to death.”
—John Donne (c. 1572–1631)