most relevant precept is lpiaos, theft generally contributes to disorder
secondary precept of do not steal
where proportionate reasons exist its right to ignore a rule, eg a starving man stealing to save his life, but aquinas said this isn't theft or robbery
proportionalism - value of a starving man stealing to save his own life is preserving his own life, proportionate
disvalue of the act is injustice to the person and the bad effects on society