140 HUMAN LIBERTY.
conceived than the notion that because man is free by nature, he is therefore exempt from law. Were this the case, it would follow that to become free we must be deprived of reason; whereas the truth is that we_are bound to submit to law precisely Ijecau se w e are free by our very nature. For law is the guide of man's actions; it turns him towards good by its rewards, and deters him from evil by its punishments.
" Foremost in this office comes the natural law, which is wTitten and engraved in the mind of every- man; and this is nothing but our reason, commanding us to do right and forbidding sin. Nevertheless all prescriptions of human reason can have force of law only inasmuch as they are the voice and the interpreters of some higher power on which our reason and liberty necessarily de- pend. For, since the force of law consists in the imposing of obligations and the granting of rights, authority is the one and onl}' foundation of all law — the power, that is, of fixing duties and defining rights, as also of assigning the necessary sanctions of reward and chastisement to each and all of its commands. But all this, clearly, cannot be foimd in man, if, as his own supreme legislator, he is to be the rule of his own actions. It follows there- fore that the law of nature is the same thing as the eternal law, implanted in rational creatures, and inclining them to their right action and end; and can be nothing else but the eternal reason of God, the Creator and Ruler of all the world. To this rule of action and restraint of evil God has vouchsafed to give special and most suitable aids for strengthening and ordering the human will. The first and most excellent of these is the power of His di^^ne grace, whereby the mind can be enlightened and the will wholesomely invigorated and moved to the constant pursuit of moral good, so that the use of our inborn hberty becomes at once less difficult and less dangerous. Not that the divine assistance hinders in any way the free movement of our will; just the contrary, for grace works
