"Cargo Cult Science". Richard P. Feynman's Caltech commencement address (1974), as quoted in "'Surely You're Joking, Mr. Feynman!': Adventures of a Curious Character" edited by Ralph Leighton (p. 342), calteches.library.caltech.edu. 1985.
Speech at the Bombay Rotary Club on November 02, 1943. "Keynote: Excerpts from his speeches and chairman's statements to shareholders". Book by J. R. D Tata, 1986.