I prefer to speak of 'interdimensionals' rather than 'extraterrestrials' because the latter has connotations of 'little green men' and all the other cliche responses. Nor does it tell the full story.
“By philosophy the mind of man comes to itself, and from henceforth rests on itself without foreign aid, and is completely master of itself, as the dancer of his feet, or the boxer of his hands.”