J.D. Unwin

<p>In <em><a title="Sex and Culture" href="https://en.wikipedia.org/wiki/Sex_and_Culture">Sex and Culture</a></em> (1934), Unwin studied 80 primitive tribes and 6 known civilizations through 5,000 years of history and claimed there was a positive correlation between the cultural achievement of a people and the sexual restraint they observe.<sup id="cite_ref-1" class="reference"><a href="https://en.wikipedia.org/wiki/J.D.Unwin#cite_note-1">[1]</a></sup> <a title="Aldous Huxley" href="https://en.wikipedia.org/wiki/Aldous_Huxley">Aldous Huxley</a> described <em>Sex and Culture</em> as "a work of the highest importance".<sup id="cite_ref-2" class="reference"><a href="https://en.wikipedia.org/wiki/J.D.Unwin#cite_note-2">[2]</a></sup></p>