In popular cultures, "Extraterrestrials" are life forms — especially intelligent life forms— that are of extraterrestrial origin (often also called "aliens").
Famous quotes containing the words life and/or culture:
“His life was a sort of dream, as are most lives with the mainspring left out.”
—F. Scott Fitzgerald (1896–1940)
“Like every other good thing in this world, leisure and culture have to be paid for. Fortunately, however, it is not the leisured and the cultured who have to pay.”
—Aldous Huxley (1894–1963)