An artist's sense of life controls the sort of art she creates, in terms of content and style. The sense of life response can be separated from other aspects of the perception of art. It is an important but not the only dimension along which to measure an artwork. With this in mind, while Lovecraft's fiction and poetry displays his philosophy, its main appeal is via its sense of life. The combination in the latter is necessary because in Horror fiction, the emotions evoked cannot be sustained for long.
Small doses work best.
This technique typifies Horror, but especially Horror of the fantastic type. 3 Fantastic Horror does not allow the reader to figure out whether the weird is real or a figment of the imagination. If fear of the unknown is a powerful fear, then not knowing whether the monster exists or is an illusion is even more powerful. The projection of weirdness and refusal to be clear about its nature are anathema to Objectivism. This is not just an issue of context.