The first scholarly theories of myth appeared during the second half of the 19th century.^[41] In general, these 19th-century theories framed myth as a failed or obsolete mode of thought, often by interpreting myth as the primitive counterpart of modern science.^[44]

For example, E. B. Tylor interpreted myth as an attempt at a literal explanation for natural phenomena: unable to conceive of impersonal natural laws, early man tried to explain natural phenomena by attributing souls to inanimate objects, giving rise to animism.^[45] According to Tylor, human thought evolves through various stages, starting with mythological ideas and gradually progressing to scientific ideas. Not all scholars — not even all 19th century scholars — have agreed with this view. For example, Lucien Lévy-Bruhl claimed that "the primitive mentality is a condition of the human mind, and not a stage in its historical development."^[46]

Max Müller called myth a "disease of language". He speculated that myths arose due to the lack of abstract nouns and neuter gender in ancient languages: anthropomorphic figures of speech, necessary in such languages, were eventually taken literally, leading to the idea that natural phenomena were conscious beings, gods.^[47]

The anthropologist James Frazer saw myths as a misinterpretation of magical rituals; which were themselves based on a mistaken idea of natural law.^[48] According to Frazer, man begins with an unfounded belief in impersonal magical laws. When he realizes that his applications of these laws don't work, he gives up his belief in natural law, in favor of a belief in personal gods controlling nature — thus giving rise to religious myths. Meanwhile, man continues practicing formerly magical rituals through force of habit, reinterpreting them as reenactments of mythical events. Finally, Frazer contends, man realizes that nature does follow natural laws, but now he discovers their true nature through science. Here, again, science makes myth obsolete: as Frazer puts it, man progresses "from magic through religion to science".^[33]

Robert Segal asserts that by pitting mythical thought against modern scientific thought, such theories implied that modern man must abandon myth.^[49