He has never dispensed from such laws as involve the principles of natural morality. The violation of some laws is wrong because God has forbidden a thing, or commanded some disciplinary measures. But contraception is not wrong because God forbids it. Rather God has forbidden it because it is wrong in itself; and God could not dispense from it, even as He could never sanction an essentially wrong thing.
Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty