Errors of modernism identified by beliefs that: there exists no Supreme, all-wise, all-provident Divine Being, distinct from the universe, and God is identical with the nature of things, and is, therefore, subject to changes. In effect, God is produced in man and in the world, and all things are God and have the very substance of God, and God is one and the same thing with the world, and, therefore, spirit with matter, necessity with liberty, good with evil, justice with injustice. (Papal Allocution, Maxima Quidem, 9 June 9 1862).
Moral laws do not stand in need of the divine sanction, and it is not at all necessary that human laws should be made conformable to the laws of nature and receive their power of binding from God. (Papal Allocution, Maxima Quidem, 9 June 1862).
For you well know, venerable brethren, that at this time men are found not a few who, applying to civil society the impious and absurd principle of "naturalism," as they call it, dare to teach that "the best constitution of public society and (also) civil progress altogether require that human society be conducted and governed without regard being had to religion any more than if it did not exist; or, at least, without any distinction being made between the true religion and false ones." (Papal Encyclical, Condemning Current Errors: Quanta Cura, 8 December 1986).