Just as those without eyes are unable to see forms, so too the Dharma is not seen without ethical discipline.
Just as it is impossible to embark on a road without legs, so too Liberation will not come without ethical discipline.
Just as a good vase is a vessel for precious things, so too ethical discipline is the basis for cultivating the Dharmas.
Just as a broken vase is not suitable to be a vessel for precious things, so too all Dharmas fall away when ethical discipline is torn asunder.
—Buddha Shakyamuni, Śīlā Samyukta Sūtra