-DATE- 19630517 -YEAR- 1963 -DOCUMENT_TYPE- SPEECH -AUTHOR- F. CASTRO -HEADLINE- SPEECH PRIOR TO HIS DEPARTURE FOR MOSCOW -PLACE- LENINGRAD AIRPORT -SOURCE- MOSCOW IN SPANISH -REPORT_NBR- FBIS -REPORT_DATE- 19630520 -TEXT- CASTRO RETURNS TO MOSCOW, VISITS KIEV Leningrad Departure Speech Moscow in Spanish to Cuba 1200 GMT 17 May 1963-L (Speech by Fidel Castro at Leningrad airport, made prior to his departure for Moscow. Variations as transmitted in a summary by Moscow TASS in English to Europe 1120 GMT 20 May are inserted) (Text) Dear friends of Leningrad: We are very sad to be leaving your city. It is too full of history to get to know it in two days; too beautiful to completely remember; too warm in its sentiments and deeds, for the traveler and visitor to leave without feeling sad. (TASS English: Leningrad is too beautiful for the images that remain in our memory ever to be obliterated. Too warm was the reception and the expression of friendly feelings for us not to re