“In the battle against error and sin, that which the world calls obstinacy, God calls fidelity.”
- St. Augustine of Hippo, De Fide et Symbolo (c. 393 AD)
“Firmness in upholding the Catholic faith and the divine law is not stubbornness, but rather a virtue—it is constancy in truth, which every Christian is bound to practice, even unto death.”
- Acta Apostolicae Sedis (1918)