l x x x i v E D I T O R I A L M E T H O D Non-Latin scripts are transcribed into Latin type, with the exception of Cyrillic. In transcribing Japanese texts, diacritical marks are used when they appear in orig- inal texts but are neglected in annotations. Indentation is made where an author used a vertical line to indicate a new para- graph, where the paragraphing is ambiguous but was probably intended, and where the author’s style is to start a new paragraph by placing the first line flush with the left margin. A closure in a letter is printed as one continuous text, and commas are silently provided in a closure where appropriate. Unusual or confusing abbreviations are expanded within square brackets. Where letters are obscured or difficult to read, a probable reading is placed within square brackets, with an assumption of correct spelling, grammar, and syntax. Where no probable reading is possible, for each illegible word three dashes within square brackets are inserted. When the author uses square brackets, it is noted. Author’s deletions deemed insignificant are omitted without comment. Those deemed significant are placed within angle brackets preceding the revised text. The text of a deletion within a deletion is crossed out within the angle brackets. If a por- tion of a text greater than one line has been deleted as a whole, the deletion is noted by a diagonal line running from the upper left to the lower right. When the author cancels part of an equation for calculational purposes, this is noted with a diagonal line running from the lower left to the upper right. In mathematical research notes and calculations, deletions and cancellations may also be given graphically in a way that imitates the original. Superscript and subscript interlineations are brought down to the line interlin- eations are noted when significant. Authors’ emendations are silently inserted into the flow of the text where place- ment is significant, or where the emendation serves as a comment on the text but does not fit in seamlessly with the main text, the emendation is noted in endnotes. Words or sentences marked by the author for insertion, but physically placed else- where on the page, are silently inserted into the text, unless significant information may be lost. Passages not clearly marked for insertion are placed at the end of the document, with a note indicating the original placement. Facsimiles of diagrams are inserted into the transcription as close to the original placement as the layout of the page allows. Text omissions are indicated by ellipses in square brackets. In typed documents, typographical errors are retained. In overstrikes, the letter spacing is conventionalized. In the dateline of outgoing letters, Einstein’s Berlin street address is omitted. Towns and cities underlined in addresses at the head of documents and on enve- lopes and postcards are transcribed without the lines.