The article critiques the poem "Catullus 51," by Roman poet Gaius Valerius Catullus. The second line of the poem illustrated Catullus' departure from his model, "Sappho 31," the poem by Greek poet Sappho of Lesbos. In the first line, Catullus modified Sappho's plural θεοίς with the singular deo. Catullus echoed the Homeric phrase δαίμονι ίσοϛ, meaning equal to a supernatural force.