“This is especially important when addressing less statistically savvy audiences. Such audiences could perhaps be encouraged to think of two normal distributions, one representing males and the other females. Instead of imagining that natural selection creates two distinct psychological types — a male type and a female type, described by the mean values for each group — they could be encouraged to imagine that natural selection pushes the male and female distributions closer together or further apart. This simple expedient may help people to visualize the effects of natural selection on average sex differences without at the same time losing sight of the variation within each sex.”
Source: The Ape that Kicked the Hornet's Nest (2013), p. 268
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Steve Stewart-Williams 63
1971Related quotes
respect, not contempt.
Source: SCUM MANIFESTO (1967), p. 10 ("respect, not contempt." (not bracketed in original) not certain in original due to truncation of bottom of photocopy page but consistent with it).

Source: Sexual Personae: Art and Decadence from Nefertiti to Emily Dickinson (1990), p. 26
Source: SCUM MANIFESTO (1967), p. 2.
Source: SCUM MANIFESTO (1967), p. [1] ("y(male)" & "x(female)" spaceless in original).

Pacquiao's stand on Same-Sex marriage
As quoted in Manny Pacquiao’s stand on same-sex marriage: ‘Mas masahol pa sa hayop ang tao’ http://www.interaksyon.com/interaktv/manny-pacquiaos-stand-on-same-sex-marriage-mas-masahol-pa-sa-hayop-ang-tao InterAksyon, February 15, 2016
The First Sex, ch. 1 - Woman and the Second Sex (1971).

Source: Communion: The Female Search for Love