He was an American writer of science fiction and horror stories, best known for his creativity. Born in Providence, Rhode Island, Lovecraft spent most of his life in New England. He was born wealthy, but his family fortune squandered shortly after his grandfather's death. In 1913, he wrote a critical letter to Pulp's magazine that eventually led to his co-authorship of Pulp's novel. During the interwar period, he wrote and published stories that focused on his interpretation of humanity's place in the universe. In his opinion, humanity was a tiny part of an indifferent universe that could be swept away at any moment. These stories also included fascinating elements that represent the perceived fragility of anthropocentrism. Lovecraft joined the "Kalem" little book club when he first moved to New York, and later became the center of a broader group of authors known as the "Lovecraft Circle". This group has often written stories that share details with each other. He was a prolific writer. He maintained correspondence with many different authors and literary conservatives. According to some estimates, he wrote nearly 100,000 letters over the course of his life. In these letters he discussed his worldview and daily life, and taught younger authors, such as August Derleth, Donald Wanderer, and Robert Bloch.