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On the anniversary of the First Council of Nicaea (ended 19 June AD 325). For other texts and ebooks, you may access the List of Free eBooks (Arranged by Title), the List of Free eBooks (Grouped by Subject), the List of Worth-It Catholic Books & eBooks, and the main page of the Catholic eBooks Project.

“But some one will ask, How is it then, that certain excellent persons, and of position in the Church, are often permitted by God to preach novel doctrines to Catholics?… Let us listen, then, to Holy Moses… [who] writes thus in Deuteronomy… For the Lord, your God, tries you, to know whether you love Him with all your heart and with all your soul. The reason is clearer than day why Divine Providence sometimes permits certain doctors of the Churches to preach new doctrines — That the Lord your God may try you” (Saint Vincent of Lerins, Commonitory For the Antiquity and Universality of the Catholic Faith Against the Profane Novelties of All Heresies, x)