Was ist Leben? Die lebende Zelle mit den Augen des Physikers betrachtet. Epilog: Determinismus und Willensfreiheit. Francke Bern 1951. S. 123 http://books.google.de/books?id=oEc_AAAAYAAJ&q=leitet; Piper München 1987, S, 122 online-media.uni-marburg.de http://online-media.uni-marburg.de/biologie/genetik/boelker/Wissenschaft/Erwin%20Schroedinger_Was%20ist%20Leben.pdf.
(Original englisch: "The only possible inference from these two facts is, I think, that I - I in the widest meaning of the word, that is to say, every conscious mind that has ever said or felt 'I' - am the person, if any, who controls the 'motion of the atoms' according to the Law of Nature." - What is Life? (1944). Cambridge UP p. 87 books.google http://books.google.de/books?id=hP9-WIEyv8cC&pg=PA87