It would seem that the necessity of reform arises from this, that our ideas, which are eternal, find themselves expressed in phrases and resulting in actions which belong to material environment—an environment, therefore, that perpetually changes in form. It is not to be admitted that the innermost standards of the soul can change; if they could, the word “reform” would lose all moral meaning, and a thing not being good would cease to be desired. But the meaning of words, the effect on the senses of certain acts, the causes of pleasure and pain in a society, the definition of nationality—all these things of their nature change without ceasing, and must as ceaselessly be brought into accordance with the unchanging mind. What test can be applied by which we may know whether a reform is working towards this rectification or not? None, except the general conviction of a whole generation that this or that survival obstructs the way of right living, the mere instinct of justice expressed in concrete terms on a particular point. It is by this that the just man of any period feels himself bound. This is not a formula: it seems a direction of the loosest and of the most useless kind; and yet to observe it is to keep the State sane, to neglect it is to bring about revolution. This much is sure, that where there exists in a State a body of men who are determined to be guided by this vague sense of justice, and who are in sufficient power to let it frame their reforms, then these men save a State and keep it whole. When, on the contrary, those who make or administer the laws are determined to abide by a phrase or a form, then the necessities accumulate, the burden and the strain become intolerable, and the gravitation towards the normal standard of living, which should act as a slight but permanent force, acts suddenly at a high potential and with destructive violence. As an example of the time when the former and the better conditions prevailed, I would cite the period between the eleventh and the fourteenth centuries, when a change of the most fundamental kind passed over the society of Europe, indeed a change from barbarism to civilisation, and yet the whole went well. Reform, being continual, was easy. New institutions, the Parliaments, the Universities, the personal tax, rose as they were demanded, and the great transition was crowned with the security and content that surrounded St. Louis. Simplicity, that main condition of happiness, was the governing virtue of the time. The king ruled, the knight fought, the peasant dug in his own ground, and the priest believed.