Thomas Aquinas

“ Since a father stands in the relation of principle, and his son in the relation of that which is from a principle, it is essentially fitting for a father to support his son: and consequently he is bound to support him not only for a time, but for all his life, and this is to lay by. On the other hand, for the son to bestow something on his father is accidental, arising from some momentary necessity, wherein he is bound to support him, but not to lay by as for a long time beforehand, because naturally parents are not the successors of their children, but children of their parents. ”

“ These have kept Thy word." Now a man who knows not his parents and other kinsmen, or who even hates them, must needs omit the duties of piety. Therefore the duties of piety should be omitted for the sake of religion. ”

“ He that has already made his profession in religion is deemed to be already dead to the world: wherefore he ought not, under pretext of supporting his parents, to leave the cloister where he is buried with Christ, and busy himself once more with worldly affairs. Nevertheless he is bound, saving his obedience to his superiors, and his religious state withal, to make points efforts for his parents' support. ”

“ Therefore in such a case the duties of piety towards one's parents should be omitted for the sake of the worship religion gives to God. If, however, by paying the services due to our parents, we are not withdrawn from the service of God, then will it be an act of piety, and there will be no need to set piety aside for the sake of religion. ”

“ For Our Lord said (Lk. 14:26) : "If any man come to Me, and hate not his father, and mother, and wife, and children, and brethren, and sisters, yea and his own life also, he cannot be My disciple." Hence it is said in praise of James and John (Mat. 4:22) that they left "their nets and father, and followed" Christ. ”

“ Accidentally, that is due to a father, which it befits him to receive in respect of something accidental to him, for instance, if he be ill, it is fitting that his children should visit him and see to his cure; if he be poor, it is fitting that they should support him ”