Heinrich Himmler, in his secret memorandum "Reflections on the Treatment of Peoples of Alien Races in the East" dated 25 May 1940, expressed his own thoughts and the future plans for the populations in the East. Himmler stated that it was in the German interest to discover as many ethnic groups in the East and splinter them as much as possible, find and select racially valuable children to be sent to Germany to assimilate them and restrict non-Germans in the General Government and conquered territories to four-grade elementary school which would only teach them how to write their own name, to count up to 500 and to obey Germans. Himmler believed the Germanization process in Eastern Europe would be complete when "in the East dwell only men with truly German, Germanic blood".