 Essentialists claim that categories of sexual attraction are observed rather than created. For example, while ancient Greece did not have terms that correspond to the heterosexual/homosexual division, persons did note men who were only attracted to person of a specific sex, hence the lack of terminology need not be taken as evidence of a lack of continuity in categories. Through history and across cultures there are consistent features, albeit with meaningful variety over time and space, in sexual attraction to the point that it makes sense of speak of specific sexual orientations. According to this view, homosexuality is a specific, natural kind rather than a cultural or historical product. Essentialists allow that there are cultural differences in how homosexuality is expressed and interpreted, but they emphasize that this does not prevent it from being a universal category of human sexual expression.