Discuss the change from the "one sex" model to the "two sex" model and the affect this had on sexuality throughout the 18th and 19th century?

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Discuss the change from the “one sex” model to the “two sex” model and the affect this had on sexuality throughout the 18th and 19th century?

The word sex refers to both the physical activity of sex and the designation of anatomical differences between female and male bodies. Throughout the 18th century sex and sexuality became indivisible from the biological differences between female and male bodies; it seems impossible to discuss sexuality in the 18th century without simultaneously including a reference to the biological distinction between the two sexes. In order to fully understand the effect that the diversity between the sexes, sexuality and social order had on the 18th and 19th century one must look at modern European history and science. Doing so will illustrate that sexuality and sexual difference was a modern trend and that both nature and sexed bodies have a history, or as Michelle Foucault would say a "genealogy”.

Sex and sexuality during the 17th and 18th century were seen in a radically different manner to that which they are viewed in today. Beliefs concerning sexual difference, gender and sexuality were dominated by a combination of Ancient Greek philosophy (particularly Aristotle), Roman physicians (Galen) Midwives and Christian theology. In order to comprehend how pre-modern Europeans viewed the body, sexual difference, gender and sexuality one must leave their modern views behind. By the 18th century views towards gender and sex changed drastically, from a world of the one sex model to a world inhabited by two sexes; one female and the other male, each being quantitatively different from the other.


Stretching from the Ancient Greeks, through the Renaissance and beyond, until the Enlightenment in the 17 & 18 centuries all bodies were alike in substance. Difference was seen only in terms of degrees of perfection; a matter of degree rather than biological differences separated female and male. This was a world in which males and females had all the same bits, they were simply arranged differently along a vertical axis of perfection. Thomas Lacquer refers to this as the "one sex/one flesh model" in contrast to our modern "two sex model". Perhaps the clearest expression of the one sex model is found in the works of the second century physician, Galen.

Galen’s anatomical understanding influenced artisans, midwives and surgeons alike. The notion of heat and moisture is fundamental to Galen’s understanding of the anatomical differences between female and male. The amount of heat and moisture produced by a specific body was viewed as a direct guide of its place in the great chain of being; it’s hierarchical order of rank according to degrees of perfection. Galen placed Humans, being the hottest and thus most perfect, at the top of this hierachy and the male was viewed as more perfect than the female due to their excess of heat and moisture. It was even believed that “women menstruated because they were cooler then men; they used up less blood and so were left with a surplus amount of nutriment.” The location of Male and female genitals differed only in one way; one was inside and one outside, each possessing identical elements. Men’s excess of heat and moisture resulted in their reproductive organs being forced outside the body, while women being of a cooler, dryer nature left them inside. Not only was there the difference between male and female heat and moisture but men were also perceived “to be naturally more rational, strong and intellectual, and women were likely to be seen as irrational, physically weak, shorter lived but with the strength of spirituality that men lacked.” 

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In Galen’s model each element of the reproductive system is common to women and men, a mirror image of each other. The vagina an interior penis, labia as foreskin, uterus as scrotum, ovaries as testicles. For Galen, sexual pleasure, and orgasm for both female and male were essential and necessary to generate enough heat to reproduce. The male heats up to a point at which blood is transformed into semen while women also required orgasmic sexual pleasure to simultaneously generate her own ejaculated seed. The view that women’s orgasm was essential to reproduction was dominant throughout Europe until the ...

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