What can be accomplished by a few principles is not effected by many. But it seems that everything we see in the world can be accounted for by other principles, supposing God did not exist. For all natural things can be reduced to one principle, which is nature, and all voluntary things can be reduced to one principle, which is human reason, or will. Therefore there is no need to suppose God's existence.
Thomas AquinasHow can we live in harmony? First we need to know we are all madly in love with the same God.
Thomas AquinasIn 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 AquinasThe Cross to me is certain salvation. The Cross is that which I ever adore. The Cross of the Lord is with me. The Cross is my refuge.
Thomas AquinasIt is a sin to regard the fact that God cannot do the impossible as a limitation on his powers.
Thomas AquinasGiven the sin of impiety through which they [the Romans] sinned against the divine nature [by idolatry], the punishment that led them to sin against their own nature followed.... I say, therefore, that since they changed into lies [by idolatry] the truth about God, He brought them to ignominious passions, that is, to sins against nature; not that God led them to evil, but only that he abandoned them to evil.
Thomas Aquinas