404 Quotes by Thomas Aquinas

The existence of a prime mover- nothing can move itself; there must be a first mover. The first mover is called God.

Every judgement of conscience, be it right or wrong, be it about things evil in themselves or morally indifferent, is obligatory, in such wise that he who acts against his conscience always sins.

They also have at that critical point of death the opportunity to be converted to God through repentance. And if they are so obstinate that even at the point of death their heart does not draw back from malice, it is possible to make a quite probable judgment that they would never come away from evil.

It seems that God does not exist; because if one of two contraries be infinite, the other would be altogether destroyed. But the word "God" means that He is infinite goodness. If, therefore, God existed, there would be no evil discoverable; but there is evil in the world. Therefore God does not exist.

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.

If anyone without the right faith receives Baptism outside the Church, he does not receive it unto salvation ... From the comparison of the Church to Paradise, we learn that men can receive her Baptism even outside her fold, but that out there no one can receive or keep the salvation of the blessed.

The principal act of courage is to endure and withstand dangers doggedly rather than to attack them.

Pain itself can be pleasurable accidentally in so far as it is accompanied by wonder, as in stage-plays; or in so far as it recalls a beloved object to one's memory, and makes one feel one's love for the thing, whose absence gives us pain. Consequently, since love is pleasant, both pain and whatever else results from love, in so far as they remind us of our love, are pleasant.

Greed is a sin against God, just as all mortal sins, in as much as man condemns things eternal for the sake of temporal things,