But though there be a time when a child comes to be as free from subjection to the will and command of his father, as the father himself is free from subjection to the will of any body else, and they are each under no other restraint, but that which is common to them both, whether it be the law of nature, or municipal law of their country; yet this freedom exempts not a son from that honour which he ought, by the law of God and nature, to pay his parents.