Cosmicism

[1][2] Lovecraft was a writer of horror stories that involve occult phenomena like astral possession and alien miscegenation, and the themes of his fiction over time contributed to the development of this philosophy.

[3] The philosophy of cosmicism is explained as the idea that "there is no recognizable divine presence, such as a god, in the universe, and that humans are particularly insignificant in the larger scheme of intergalactic existence.

Common themes related to cosmicism in Lovecraft's fiction are the insignificance of humanity in the universe[12] and the search for knowledge ending with disaster.

[14] Lovecraft's work also tended to suggest fear of the other to the reader, such as in the stories "The Dunwich Horror" and "Dagon", often describing that which is unknown as a terrible threat to humanity.

Lovecraft made no bones about being a complete atheist, and he considered religion not merely false but dangerous to social and political progress.