Sin is believing the lie that you are self-created, self-dependent and self-sustained.
Saint AugustineCantare amantis est ... Singing belongs to one who loves." (s. 336, 1 – PL 38, 1472).
Saint AugustineTo dye oneself with paints in order to have a rosier or a paler complexion is a lying counterfeit.
Saint AugustineIt was not the visible sun, but its invisible Creator who consecrated this day for us, when the Virgin Mother, fertile of womb and integral in her virginity, brought him forth, made visible for us, by whom, when he was invisible, she too was created. A Virgin conceiving, a Virgin bearing, a Virgin pregnant, a Virgin bringing forth, a Virgin perpetual. Why do you wonder at this, O man?
Saint Augustine