Without doubt one is allowed to resist against the unjust aggressor to one's life, one's goods or one's physical integrity; sometimes, even 'til the aggressor's death... In fact, this act is aimed at preserving one's life or one's goods and to make the aggressor powerless. Thus, it is a good act, which is the right of the victim.
Thomas AquinasGod should not be called an individual substance, since the principle of individuation is matter.
Thomas AquinasMan should not consider his material possession his own, but as common to all, so as to share them without hesitation when others are in need.
Thomas Aquinas