17 But the naturalists go much further; for, having, in the highest things, entered upon a wholly erroneous course, they are carried headlong to extremes, either by reason of the weakness of human nature, or because God inflicts upon them the just punishment of their pride. Hence it happens that they no longer consider as certain and permanent those things which are fully understood by the natural light of reason, such as certainly are - the existence of God, the immaterial nature of the human soul, and its immortality. The sect of the Freemasons, by a similar course of error, is exposed to these same dangers; for, although in a general way they may profess the existence of God, they themselves are witnesses that they do not all maintain this truth with the full assent of the mind or with a firm conviction. Neither do they conceal that this question about God is the greatest source and cause of discords among them; in fact, it is certain that a considerable contention about this same subject has existed among them very lately. But, indeed, the sect allows great liberty to its votaries, so that to each side is given the right to defend its own opinion, either that there is a God, or that there is none; and those who obstinately contend that there is no God are as easily initiated as those who contend that God exists, though, like the pantheists, they have false notions concerning Him: all which is nothing else than taking away the reality, while retaining some absurd representation of the divine nature.
Source: Humanum Genus (Vatican.va)