To this I received the answer, that I might follow my plan. Accordingly I applied myself with all diligence to the preparation of this text-book, using the Latin work on mathematics by Wolff as its basis; and in two months it was finished. I then returned to Berlin, to give an account of my work, but received immediately from one of the gentlemen interested the disappointing information, that, as the work was very voluminous, and as it would entail heavy expenditure especially on account of the copper-plates required, he could not undertake the publication at his own expense, and I might therefore do with my manuscript whatever I chose. I complained of this to Mendelssohn; and he thought, that certainly it was unreasonable to let my work go without remuneration, but that I could not require my friends to undertake the publication of a work which could not calculate on any good result in consequence of that aversion to all science, which I myself knew to be prevalent among the Jewish nation. His advice therefore was, that I should get the book printed by subscription; and of course I was obliged to content myself with this. Mendelssohn and the other enlightened Jews in Berlin subscribed, and I received for my work merely my manuscript and the list of subscriptions. The whole plan, however, was thought of no more. On this I fell out again with my friends in Berlin. Being a man with little knowledge of the world, who supposed that human actions must always be determined by the laws of justice, I pressed for the fulfilment of the bargain made. My friends, on the other hand, began, though too late, to see, that their ill-considered project must of necessity collapse, because they had no assurance of a market for such voluminous and expensive works. From the religious, moral and political condition of the Jews up to this time it was easy to foresee that the few enlightened men among them would certainly give themselves no trouble to study the sciences in the Hebrew language, which is very ill-adapted for the exposition of such subjects; they will prefer to seek science in its original sources. The unenlightened, on the other hand,--and these form the majority,--are so swayed by rabbinical prejudices, that they regard the study of the sciences, even in Hebrew, as forbidden fruit, and persistently occupy themselves only with the Talmud and the enormous number of its commentaries.