(c) Deeds that are contrary to practices of religion, but not to the profession of faith, are not denial of belief; for one may be very much attached to one’s religion, even ready to fight for it, but not willing to follow its requirements. Example: Caius is careless about church duties, misses Mass, eats meat on Fridays, and never goes to the Sacraments; but he always calls himself a Catholic and wishes to be considered one.
(d) Signs that have some association with non-Catholic religion, but do not necessarily represent it (since they are indifferent in themselves and have other and legitimate uses), do not deny the faith, when not used as symbols of false religion. Similarly, the omission of signs that are associated with Catholicity, but which are optional, is not a denial of the faith. Examples: Titus, when travelling in the Orient, makes use of the national salutation of the pagan peoples among whom he lives. Balbus builds a church with architectural features borrowed from pagan temples. Caius wears a fez or turban in Mohammedan regions where it is not looked on as a religious headgear. Sempronius practises circumcision as a hygienic measure. Claudius does not say grace at meals when dining in public, and does not wear scapulars when bathing at the seashore.
(e) Omission of profession of faith, when it is not obligatory, is not a denial of faith; for no one is bound to make known his affairs and convictions to every acquaintance. Example: Titus works in an office where most of the clerks are non-Catholics. But no one ever speaks about religion, and hence it is not known that he is a Catholic.
944. Dangers of Profession of Unbelief.—The principal dangers of making external profession of false religion, if not of losing faith itself, are the following: (a) membership in forbidden societies; (b) communication in sectarian services; (c) cooperation in activities whose tendency or principles are erroneous.
945. Forbidden Societies.—Societies are forbidden by the Church when they are intrinsically or extrinsically evil. (a) A society is intrinsically evil, when it has an evil purpose, or uses evil means to obtain even an honest end. Thus, societies or parties that conspire against Church or State, or that seek to undermine Christian doctrines or morals, have an evil purpose; while those that demand absolute secrecy or oaths of blind obedience to unknown persons, that favor cremation, use a sectarian ritual, promote evil literature, etc., are employing evil means, no matter what may be the end in view. (b) A society is extrinsically evil, when its end and means are good, but membership in it is dangerous to faith or morals on account of circumstances (e.g., on account of the bad type of individuals who make up the society or control it).
946. The Code (Canon 684) mentions the following kinds of societies as banned for Catholics:
(a) secret societies, that is, those which demand of members that certain things which the society considers secrets be told absolutely to no one outside the society, or certain degrees of the society, not even to those who may legitimately inquire about them, such as the bishop or civil superior in the external forum, parents with regard to their children not emancipated, pastors and confessors in the internal forum. Those societies are also secret which demand blind and absolute obedience to unknown leaders;
(b) condemned societies, that is, such as have been censured by the Church, or simply forbidden. Canon 2335 decrees _ipso facto_ excommunication reserved to the Holy See against all those who join Masonic or similar associations which plot against the Church or lawful civil authority. Among the societies forbidden without censure are: various Biblical societies, societies for the promotion of cremation, the Knights of Pythias, the Odd Fellows, the Sons of Temperance, the Independent Order of Good Templars, Theosophical societies, the Y.M.C.A. Female societies affiliated with these are also condemned, since they are branches of the main society—for example, the Rebeccas, the Eastern Star, the Pythian Sisters.
Worthy of detailed consideration is the condemnation of the Communist Party and the penalties attached to membership in, or defense, or propagation of the Party. The following questions were asked of the Holy Office:
1. Whether it is licit to join the Communist Party or to favor it.