Quotes from Saint Thomas Aquinas

Further, nothing, except sin, is contrary to an act of virtue. But war is contrary to peace. Therefore war is always a sin.

Locus ab auctoritate est infirmissimus. [The argument from authority is the weakest.]

In accepting or rejecting opinions, a man must not be influenced by love or hatred of him who offers the opinions, but only by the certainty of the truth.

It is not our body which feels, not our mind which thinks, but we, as single human beings, who both feel and think.

An angel can illume the thought and mind of man by strengthening the power of vision.

When fear is excessive it can make many a man despair.

Moral science is better occupied when treating of friendship than of justice.

Friendship is the source of the greatest pleasures, and without friends even the most agreeable pursuits become tedious.

Faith is God's work within us.

Far graver is it to corrupt the faith that is the life of the soul than to counterfeit the money that sustains temporal life.

Faith has to do with things that are not seen and hope with things that are not in hand.

There is nothing on this earth more to be prized than true friendship.

Love takes up where knowledge leaves off.