A Brief History of Everything  

" I don’t mean to be crude, but it appears that testosterone basically has two, and only two, major drives: fuck it or kill it," --Ken Wilber in a A Brief History of Everything."

I started reading "A Brief History of Everything" by Ken Wilber. One of the first notions he presents is the gradient from sex, biologically defined characterization of the male and female, to gender, the cultural analog defining masculinity and femininity. He presents the idea that the difference of value spheres between males and females is primarily attributed to hormonal differences: namely, testosterone, which has the drives of "fuck it" or "kill it," and "oxytocin," which promotes feelings of attachment and nurturing. Wilber brings in the biological evolutionary significance of these hormones: testosterone for reproduction and oxytocin for mothering. -- [1]