Love does not stay idle. St. Catherine of Siena More Quotes by St. Catherine of Siena More Quotes From St. Catherine of Siena Merit consists in the virtue of love alone, flavored with the light of true discretion without which the soul is worth nothing. St. Catherine of Siena light christian love It is a human thing to sin, but perseverance in sin is a thing of the devil. St. Catherine of Siena perseverance devil sin And let the truth be your delight...Proclaim it..., but with a certain congeniality. St. Catherine of Siena delight certain truth Heaven is along the way. St. Catherine of Siena heaven way Oh, let us lose our milk teeth and cut instead the strong teeth of hate and love. St. Catherine of Siena cutting hate strong