A different custom will produce different natural principles. This experience testifies, and if there are some natural principles ineradicable by custom, so are there some customs opposed to nature ineradicable by nature, or by a second custom. This depends on constitution.
Fathers fear that the natural love of their children may be effaced. Now what sort of thing is that nature which is liable to be effaced. Custom is a second nature which destroys the former. But what is nature, for is not custom natural? I am greatly afraid that nature itself may be only our first custom, as custom is second nature.
Montaigne was wrong: custom should only be followed because it is custom, and not because it is reasonable or just; but most men follow it for the simple reason that they think it just. Otherwise they would not follow it though it were the custom, for our only desire is to be subjected to reason or to justice. Without this, custom would pass for tyranny, but the empire of reason and justice is no more tyrannical than that of choice. These are principles natural to man.
It is then good to obey laws and customs because they are laws, but we ought to know that there is neither truth nor justice to introduce into them, that we know nothing about these, and can therefore only follow what is recognised, and thus we should never transgress them. But most men cannot receive this doctrine, and since they believe that truth can be found, and that it resides in law and custom, they believe these laws, and take their antiquity as a proof of their truth, and not merely of their authority apart from truth. Thus they obey the laws, but are liable to revolt when these are shown to be of no value; and this may be proved of all of them, looked at from a certain point of view.
Injustice.—The authority of the judge is not given him for his sake, but for that of the judged. It is dangerous to say this to the people, but the people have too much faith in you; that will not harm them, and may serve you. You must then say it openly. Pasce oves meas, not tuas. You owe me pasturage.
Injustice.—It is dangerous to say to the people that the laws are not just, for men obey them only because they think them just. Therefore it is necessary to say at the same time that they must be obeyed because they are laws, as superiors must be obeyed, not because they are just, but because they are superiors. All sedition is averted, if this principle be established and it be understood what is rightly the definition of justice.
If God gave us masters direct from himself, how heartily ought we to obey them! Circumstances and necessity are infallible masters.
Custom is our nature. Whoever is accustomed to the faith believes in it, can no longer even fear hell, and believes in nothing else. Whoever accustoms himself to believe that the king is terrible ... etc. Who doubts then that our soul, being accustomed to see number, space, and motion, believes that and nothing else?
Veri juris; we have it no longer; had we it, we should not take the manners of our country as our rule of justice.
Here, not finding justice, we fall back on force, etc.