From a January 1916 article in The Atlantic called “Further Notes on the Intelligence of Woman“:
“I think she will succeed, for I doubt whether any mental power is inherent in sex. There are differences of degree, differences of quality; but I suspect that they are mainly due to sexual heredity, to environment, to suggestion, and that indeed if I may trench upon biology, human creatures are never entirely male or entirely female; there are no men, there are no women, but only sexual majorities.” (Italics mine.)