"The great problem with poisoning by Bitterness was that the passions - hatred, love, despair, enthusiasm, curiosity - also ceased to manifest themselves. After a while, the embittered person felt no desire at all. They lacked the will either to live or to die, that was the problem."

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These most crafty enemies [the devils] have filled and inebriated with gall and bitterness the Church, the spouse of the Immaculate Lamb, and have laid impious hands on Her most sacred possessions. In the Holy Place itself, where has been set up the See of the most holy Peter and the Chair of Truth for the light of the world, they have raised the throne of their abominable impiety, with the iniquitous design that when the Pastor has been struck, the sheep may be scattered.

— Pope Leo XIII