6 For as soon as the constitution and the spirit of the masonic sect were clearly discovered by manifest signs of its actions, by the investigation of its causes, by publication of its laws, and of its rites and commentaries, with the addition often of the personal testimony of those who were in the secret, this apostolic see denounced the sect of the Freemasons, and publicly declared its constitution, as contrary to law and right, to be pernicious no less to Christiandom than to the State; and it forbade any one to enter the society, under the penalties which the Church is wont to inflict upon exceptionally guilty persons. The sectaries, indignant at this, thinking to elude or to weaken the force of these decrees, partly by contempt of them, and partly by calumny, accused the sovereign Pontiffs who had passed them either of exceeding the bounds of moderation in their decrees or of decreeing what was not just. This was the manner in which they endeavoured to elude the authority and the weight of the apostolic constitutions of Clement XII and Benedict XIV, as well as of Pius VII and Pius IX.(10) Yet, in the very society itself, there were to be found men who unwillingly acknowledged that the Roman Pontiffs had acted within their right, according to the Catholic doctrine and discipline. The Pontiffs received the same assent, and in strong terms, from many princes and heads of governments, who made it their business either to delate the masonic society to the apostolic see, or of their own accord by special enactments to brand it as pernicious, as, for example, in Holland, Austria, Switzerland, Spain, Bavaria, Savoy, and other parts of Italy.
Source: Humanum Genus (Vatican.va)