Where, it may be asked, is the force to come from which shall nerve the repentant one to essay the steep ascent to the calm of Indefectible virtue?
"Roman Society from Nero to Marcus Aurelius"
Samuel Dill
The Church is Indefectible, before all things admirable, she is great- "Yes, but then we must follow her directions and practise the sacraments she orders!"
"En Route"
J.-K. (Joris-Karl) Huysmans
And the authority of the Church, being on this point sovereign and Indefectible, could not remain invisible and indeterminate.
"Outlines of a Philosophy of Religion based on Psychology and History"
Auguste Sabatier