The modesty of women, which, in its most primitive form among animals, is based on sexual periodicity, is, with that periodicity, an essential condition of courtship.
Havelock Ellis (2013). “Psychology of Sex: The Biology of Sex—The Sexual Impulse in Youth—Sexual Deviation—The Erotic Symbolisms—Homosexuality—Marriage—The Art of Love”, p.30, Butterworth-Heinemann
