But there is really no need to look for the influence of the national sentiment in particular parts of Maimonides’ work. His work as a whole cannot be fully understood unless we allow for this sentiment. Of course, as we have seen, Maimonides’ efforts to improve religion were the result of his philosophy, which taught him that religion must be made fit to fulfil its function in the spheres of theory and practice; and for his own part he certainly believed that he was actuated solely by this conviction, and was doing, as needs he must, what reason demanded of him. But we, who look at things in the light of modern psychology, which tells us that intellectual conviction is not sufficient to produce sustained effort unless it is accompanied by a strong emotion, whereby the will is roused to conquer all obstacles—we cannot conceive the possibility of arduous work without a compelling emotion. And when we look for the emotion which is most likely to furnish an explanation in this particular case, we shall find none except the national sentiment. For we know, on the one hand, that religious laws were for Maimonides nothing but an instrument of education—a means of confirming people in true beliefs and good habits of life. Moreover, he regarded many of them (sacrifices and the ceremonial associated with sacrifices) as merely a necessary evil, designed to restrict a bad practice which had taken root in the national life at an early period, and could not be abolished entirely; and even this justification applied only to the laws as a whole, while their details, as we saw above, were in his opinion wholly without meaning or significance. And yet, holding such views, he worked day and night for ten years to collect all these laws and arrange them, with meticulous exactness, down to their smallest details. Whoever realises the enormous labour that it required to get together the mass of legal prescriptions, scattered over an extensive literature, must admit that no man can be qualified for the work (even if he recognises its usefulness from a certain point of view) unless the work itself has a strong attachment for him. To see the usefulness of the work is not enough; it must be a real labour of love. What then can have kept Maimonides to his task if not the national sentiment, which made him love his people’s Law and ancient customs even where his philosophy did not attach to them any particular importance?