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https://en.wikisource.org/wiki/The_Descent_of_Man_(Darwin)/Chapter_XVIII
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https://www.penguinrandomhouse.com/books/554644/the-descent-of-man-by-grayson-perry/
May 30, 2017 - What does it mean to be male in the 21st Century? Award-winning artist Grayson Perry explores what masculinity is: from sex to power, from fashion to career...
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