A set of beliefs is at once a way of seeing the world more clearly while, at the same time, foreclosing an alternative vision.

Lillian Rubin (1924-2014) American writer, professor, psychotherapist, sociologist
Intimate Strangers: Men and Women Together (1983)
    (Source)

Section reprinted as "The Sexual Dilemma" in Roberta Satow, Gender and Social Life (2000).