(a) According to Canon Law, the age of reason comes legally when one has completed seven years (Canon 12). If a boy or girl is able to reason before that age, he or she is not obliged by laws that are purely ecclesiastical, although it is advisable that parents accustom their children to the hearing of Mass, to abstinence, etc., as soon as this can be conveniently done. If a child has passed the seventh year and does not appear able to reason, he is not bound by ecclesiastical laws. (b) According to Canon Law, the age of puberty is fixed for males at the completion of fourteen years of age, for females at the completion of twelve years of age (Canon 88, Sec.2). These who have not attained this age are excused from all penal laws, unless a law expressly states the contrary; for on account of the want of mature judgment they deserve leniency (Canon 2230). (c) The age of majority in Canon (as in Civil) Law is reached when one has completed twenty-one years (Canon 88, Sec.1). Minors in the exercise of rights are subject to the power of parents or guardians, except where the contrary is declared by the law, as is the case for the reception of the Sacraments and the choice of a religious life (Canon 89). They are not obliged by the law of fast (Canon 1254, Sec.2). 434. There are some exceptions to the second rule given in 432. Thus, those laws of the Church that grant favors or that invalidate acts can apply even to those who are habitually unable to reason (such as infants and the perpetually demented); for laws of this kind are not directive of the acts of subjects. 435. Those Bound by Particular Laws.--The particular laws of the Church oblige all those who are subject to her general laws, and who become subject to the laws of a locality by reason of domicile or personal presence (Canon 13, Sec.2). 436. There are two kinds of domicile. (a) A true domicile or home is acquired in a place in two ways: immediately, when one takes up one’s abode there, with the intention of remaining permanently or indefinitely; finally, after ten years, when one has lived there so long, even though there was no intention of remaining permanently (Canon 92, Sec.1). (b) A quasi-domicile or residence is acquired in a place in two ways: immediately, when one takes up one’s abode there with the intention of remaining there for at least the greater part of the year; finally, after the greater part of the year, when one has lived there so long (Canon 92, Sec.2). 437. With regard to abode, four classes of persons are distinguished in Canon Law (Canon 91): (a) an inhabitant, who is one that has a domicile in a place and is present there; (b) a resident, who is one that has a quasi-domicile in a place and is present there; (c) a stranger, who is one that is outside the places of his domicile and quasi-domicile; (d) a _vagus_ or homeless person, who is one that has no domicile or quasi-domicile anywhere.