Collected plays: five. London, England : Methuen, 1980, pp. 202-203.
This text is not included in the GBA but can found in "Materialien zu Brechts 'Leben des Galilei' ", Werner Hecht ed., Frankfurt, Suhrkamp, 1968. Same as Collected Plays: Five (226-227), Vintage / Random House. Same as Life of Galileo (127-128), Arcade Publishing