18 The high ideals and generous love of poverty which possessed the mind and heart of Francis could not be satisfied by a mere renunciation of external wealth. Could one ever succeed in acquiring true poverty, following the footsteps of Jesus Christ, if he did not make himself also poor in spirit by means of the virtue of humility? Francis well understood this truth; he never separated one virtue from the other and greeted them both warmly: "Holy Lady Poverty, may the Lord save you and your sister, Holy Humility.... Holy Poverty destroys all cupidity and avarice and anxiety for the things of this world. Holy Humility destroys pride, all men who are of the world, and all the things which are in the world." (Opusculum, Salutatio Virtutum, p. 20 et seq., edition 1904)
Source: Rite Expiatis (Vatican.va)