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:
“What a vast fraternity it is,—that of ‘Hearts that Ache.’ For the last three months it has seemed to me as though all society were coming to me, to drop its mask for a moment and initiate me into the mystery. How we do suffer! And we go on laughing; for, as a practical joke at our expense, life is a success.”
—Henry Brooks Adams (1838–1918)