Because we cannot know what God is, but only what He is not, we cannot consider how He is but only how He is not.

The celebration of Holy Mass is as valuable as the death of Jesus on the cross.

One day when Thomas Aquinas was preaching to the local populace on the love of God, he saw an old woman listening attentively to his every word. And inspired by her eagerness to learn more about her God whom she loved so dearly, he said to the people: It is better to be this unlearned woman, loving God with all her heart, than the most learned theologian lacking love.

If... the motion of the earth were circular, it would be violent and contrary to nature, and could not be eternal, since ... nothing violent is eternal .... It follows, therefore, that the earth is not moved with a circular motion.

Faith does not quench desire, but inflames it.

The same fire" (which he decides to be material) " torments the damned in hell and the just in purgatory...The least pain in purgatory exceeds the greatest in this life.

If a thing can be done adequately by means of one, it is superfluous to do it by means of several; for we observe that nature does not employ two instruments [if] one suffices.