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. Saint Thomas Aquinas
It is clear that he does not pray, who, far from uplifting himself to God, requires that God shall lower Himself to him, and who resorts to prayer not to stir the man in us to will what God wills, but only to persuade God to will what the man in us wills. Saint Thomas Aquinas
It is possible to demonstrate God's existence, although not a priori, yet a posteriori from some work of His more surely known to us. Saint Thomas Aquinas
Man cannot live without joy; therefore when he is deprived of true spiritual joys it is necessary that he become addicted to carnal pleasures. Saint Thomas Aquinas
Man 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. Saint Thomas Aquinas
That the saints may enjoy their beatitude and the grace of God more abundantly they are permitted to see the punishment of the damned in hell. Saint 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. Saint Thomas Aquinas