Politics: A Treatise on Government. Aristotle

but that he ought not to pay a fine of twenty minae. But he that condemns him is guilty of perjury if he sentences him to pay twenty minae while he believes the damages ought not to be so much.

      Now with respect to these honours which he proposes to bestow on those who can give any information useful to the community, this, though very pleasing in speculation, is what the legislator should not settle, for it would encourage informers, and probably occasion commotions in the state. And this proposal of his gives rise also to further conjectures and inquiries; for some persons have doubted whether it is useful or hurtful to alter the established law of any country, if even for the better; for which reason one cannot immediately determine upon what he here says, whether it is advantageous to alter the law or not. We know, indeed, that it is possible to propose to new model both the laws and government as a common good; and since we have mentioned this subject, it may be very proper to enter into a few particulars concerning it, for it contains some difficulties, as I have already said, and it may appear better to alter them, since it has been found useful in other sciences.

      Thus the science of physic is extended beyond its ancient bounds; so is the gymnastic, and indeed all other arts and powers; so that one may lay it down for certain that the same thing will necessarily hold good in the art of government. And it may also be affirmed, that experience itself gives a proof of this; for the ancient laws are too simple and barbarous; which allowed the Greeks to wear swords in the city, and to buy their wives of each [1269a]. other. And indeed all the remains of old laws which we have are very simple; for instance, a law in Cuma relative to murder. If any person who prosecutes another for murder can produce a certain number of witnesses to it of his own relations, the accused person shall be held guilty. Upon the whole, all persons ought to endeavour to follow what is right, and not what is established; and it is probable that the first men, whether they sprung out of the earth, or were saved from some general calamity, had very little understanding or knowledge, as is affirmed of these aborigines; so that it would be absurd to continue in the practice of their rules. Nor is it, moreover, right to permit written laws always to remain without alteration; for as in all other sciences, so in politics, it is impossible to express everything in writing with perfect exactness; for when we commit anything to writing we must use general terms, but in every action there is something particular to itself, which these may not comprehend; from whence it is evident, that certain laws will at certain times admit of alterations. But if we consider this matter in another point of view, it will appear to require great caution; for when the advantage proposed is trifling, as the accustoming the people easily to abolish their laws is of bad consequence, it is evidently better to pass over some faults which either the legislator or the magistrates may have committed; for the alterations will not be of so much service as a habit of disobeying the magistrates will be of disservice. Besides, the instance brought from the arts is fallacious; for it is not the same thing to alter the one as the other. For a law derives all its strength from custom, and this requires long time to establish; so that, to make it an easy matter to pass from the established laws to other new ones, is to weaken the power of laws. Besides, here is another question; if the laws are to be altered, are they all to be altered, and in every government or not, and whether at the pleasure of one person or many? all which particulars will make a great difference; for which reason we will at present drop the inquiry, to pursue it at some other time.