Alien 1979 Trailer

"The alien’s form of life is (just, merely, simply) life, life as such: it is not so much a particular species as the essence of what it means to be a species, to be a creature, a natural being – it is Nature incarnate or sublimed, a nightmare embodiment of the natural realm understood as utterly subordinate to, utterly exhausted by, the twinned Darwinian drives to survive and reproduce." - Stephen Mulhall