Moral science is better occupied when treating of friendship than of justice. – Thomas Aquinas
In order for a war to be just, three things are necessary. First, the authority of the sovereign. Secondly, a just cause. Thirdly, a rightful intention. – Thomas Aquinas
The highest manifestation of life consists in this: that a being governs its own actions. A thing which is always subject to the direction of another is somewhat of a dead thing. – Thomas Aquinas
The theologian considers sin mainly as an offence against God; the moral philosopher as contrary to reasonableness. – Thomas Aquinas