On 10 September 1970 Abbé Raymond Dulac (1903-1987) clarified:
Equivocation acts like a slow poison.
Heresy attacks a precise article of dogma.
Equivocation undermines the habitus of faith and thus weakens all dogmas.
One becomes a formal heretic only by willing it.
Equivocation instead is able to demolish the faith of a man unbeknownst to him.
Heresy affirms what dogma denies or denies what it affirms.
Equivocation destroys the faith just as radically, by refraining from either affirming or denying, by turning revealed certainty into personal opinion, flexible to the will. The individual will thus becomes the rule and measure of things."
- Edited quote from Abbé Raymond Dulac, Le droit de la messe romaine, Versailles: Publications du Courrier de Rome, 2018, p. 252
