My best remembered quotes on modesty

Matthew Henry commentary on Numbers 25:1
Those that have broken the fences of modesty will never be held by the bonds of piety, and those that have dishonoured themselves by fleshly lusts will not scruple to dishonour God by idolatrous worships, and for this they are justly given up yet further to vile affections.

HOMILIES OF ST. JOHN CHRYSOSTOM
For indeed, touching all these, it hath been made manifest by themselves, that an evil spirit, and some cruel demon at war with our race, a foe to modesty, and an enemy to good order, oversetting all things, hath made his voice be heard in their soul.