Schism

"Inexpiabilis et gravis culpa discordi nec passione purgatur. Esse martyr non potest qui in ecclesia non est. ... Occidi talis potest, coronari non potest."

"The inexpiable sin of schism is not done away with even by suffering. No one can be a martyr who is not in the Church. ... He may be slain, crowned he cannot be."

"So schismatics the plain believers quit, And are but damn’d for having too much wit."

"Schisms are the shadow side of success."