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:
“She only said, ‘My life is dreary,
He cometh not,’ she said;
She said, ‘I am aweary, aweary,
I would that I were dead!’”
—Alfred Tennyson (1809–1892)