Jewish history and Jewish life, and have devoted more attention to Manasseh ben Israel than he has so far received in this connection. It has not been thought necessary to give detailed references to authorities, because the earliest biographies and all the available documents relating to Spinoza have been edited by Prof. Freudenthal in a single volume under the title of Die Lebensgeschichte Spinozas, and the evidence can easily be found there. For the general history of the period I consulted Motley, Blok, and the Cambridge Modern History; and Graetz, for the history of the Jews.
In the second part of the Introduction I confined myself to such a general statement of the history, &c., of the Short Treatise as may be followed without any previous knowledge of the Treatise itself, leaving details for the Commentary, where they are dealt with as occasion arises. By the aid of facsimiles the reader is enabled to judge for himself on various matters which would otherwise have to be taken on trust. In the preparation of this part and of the remainder of the volume I found the writings of Prof. Freudenthal, Dr. W. Meyer, and C. Sigwart very helpful, and I am also indebted more or less to the other writers mentioned on pp. cxxvii f., or in other parts of the volume.
In conclusion, I desire to acknowledge my obligations to all who have helped me in any way. Dr. Byvanck (Librarian of the Royal Library, The Hague) and Mr. Chambers (Librarian of University College, London) have enabled me to consult the MSS. with as little inconvenience as possible. The Royal Society has given me permission to reproduce the facsimile on p. Ix. Prof. S. Alexander, of the University of Manchester, has read the Introduction in proof, and made valuable suggestions. I wish to thank them all very cordially, and I hope that the usefulness of the result may in some measure compensate for all the trouble given and taken in the preparation of this volume.
A. WOLF
Harrow, November 1909
