Whether marriage can result from one person's consent to take another for a base motive?

Objections

Objection 1 : It would seem that marriage cannot result from one person's consent to take another for a base motive. For there is but one reason for one thing. Now marriage is one sacrament. Therefore it cannot result from the intention of any other end than that for which it was instituted by God; namely the begetting of children.
Objection 2 : Further, the marriage union is from God, according to Mt. 19:6, "What . . . God hath joined together let no man put asunder." But a union that is made for immoral motives is not from God. Therefore it is not a marriage.
Objection 3 : Further, in the other sacraments, if the intention of the Church be not observed, the sacrament is invalid. Now the intention of the Church in the sacrament of matrimony is not directed to a base purpose. Therefore, if a marriage be contracted for a base purpose, it will not be a valid marriage.
Objection 4 : Further, according to Boethius (De Diff., Topic. ii) "a thing is good if its end be good." But matrimony is always good. Therefore it is not matrimony if it is done for an evil end.
Objection 5 : Further, matrimony signifies the union of Christ with the Church; and in this there can be nothing base. Neither therefore can marriage be contracted for a base motive.