Good works are of two kinds. Some are exterior, such as prayer, fasting, and almsgiving; abstaining from swearing, falsehood and murmuring; avoiding injuring or annoying people and other things of a similar kind. Some also are purely spiritual or interior, such as fervent love for God and our neighbor, an intense realization of our own gratitude for the Divine mercies, and such a profound reverence for the Almighty that we realize our own nothingness in the sight of His greatness.
–Saint John of Avila (1500 – 1569)