H. P. Lovecraft (1890-1937) was a great horror writer, correspondent, and philosopher. This book focuses on his stories, texts, and ideas. It attempts to make sense of their underlying unity. The main themes are value nihilism, cosmicism, the language of the unsayable, and the tension between science and magic. Special attention is paid to Lovecraft's style, which is shown to be an essential aspect of his creativity. Lovecraft was also an interesting person whose life is documented in his many letters. This book unifies the biographical, fictional, and philosophical dimensions of Lovecraft's writings.