Why Sexual Morality May be Far More Important than You Ever Thought

Unwin examines the data from 86 societies and civilizations to see if there is a relationship between sexual freedom and the flourishing of cultures. What makes the book especially interesting is that we in the West underwent a sexual revolution in the late 1960’s, 70’s, and 80’s and are now in a position to test the conclusions he arrived at more than 40 years earlier.

So what did he find?

I have prepared a 26-page collection of quotes from his book that summarize his findings; but even that would leave you with a significant under-appreciation of the rigour and fascinating details revealed in data from 86 cultures. Here are a few of his most significant findings:

Effect of sexual constraints: Increased sexual constraints, either pre or post-nuptial, always led to increased flourishing of a culture. Conversely, increased sexual freedom always led to the collapse of a culture three generations later.

Single most influential factor: Surprisingly, the data revealed that the single most important correlation with the flourishing of a culture was whether pre-nuptial chastity was required or not. It had a very significant effect either way.

Highest flourishing of culture: The most powerful combination was pre-nuptial chastity coupled with “absolute monogamy”. Rationalist cultures that retained this combination for at least three generations exceeded all other cultures in every area, including literature, art, science, furniture, architecture, engineering, and agriculture. Only three out of the eighty-six cultures studied ever attained this level.

Effect of abandoning prenuptial chastity: When strict prenuptial chastity was no longer the norm, absolute monogamy, deism, and rational thinking also disappeared within three generations.

Total sexual freedom: If total sexual freedom was embraced by a culture, that culture collapsed within three generations to the lowest state of flourishing — which Unwin describes as “inert” and at a “dead level of conception” and is characterized by people who have little interest in much else other than their own wants and needs. At this level, the culture is usually conquered or taken over by another culture with greater social energy.

Time lag: If there is a change in sexual constraints, either increased or decreased restraints, the full effect of that change is not realized until the third generation. (Note: I’ve added a clarifying footnote at the end of this article. See footnote #13)

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