Humanum Genus §7

⁷ But, what is of highest importance, the course of events has demonstrated the prudence of Our predecessors. For their provident and paternal solicitude had not always and every where the result desired; and this, either because of the simulation and cunning of some who were active agents in the mischief, or else of the thoughtless levity of the rest who ought, in their own interest, to have given to the matter their diligent attention. In consequence, the sect of Freemasons grew with a rapidity beyond conception in the course of a century and a half, until it came to be able, by means of fraud or of audacity, to gain such entrance into every rank of the State as to seem to be almost its ruling power. This swift and formidable advance has brought upon the Church, upon the power of princes, upon the public well-being, precisely that grievous harm which Our predecessors had long before foreseen. Such a condition has been reached that henceforth there will be grave reason to fear, not indeed for the Church - for her foundation is much too firm to be overturned by the effort of men - but for those States in which prevails the power, either of the sect of which we are speaking or of other sects not dissimilar which lend themselves to it as disciples and subordinates.