H. P. Lovecraft was a highly influential writer of the early twentieth century, but be aware, his stories have severe issues with racism and xenophobia in ways that make them deeply uncomfortable to read. While he is known for his influence in the horror genre, his work should not be pigeon-holed as strictly horror. A significant quantity of his work fits the genre of fantasy and of the supernatural, whereas many of his most famous stories fit within the genre of science fiction.
Speaking stylistically and technically, Lovecraft's writing is highly distinctive. Consider the first paragraph that opens perhaps his most famous story: The Call of Cthulhu:
The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents. We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far. The sciences, each straining in its own direction, have hitherto harmed us little; but some day the...
(The entire section contains 2 answers and 613 words.)