John Banner (born Johann Banner, 28 January 1910 -- 28 January 1973) was an Austrian - born American film and television actor. He is best known for his role as Master Sergeant Schultz in the situation comedy Hogan 's Heroes (1965 -- 1971). Schultz, constantly encountering evidence that the inmates of his stalag were planning mayhem, frequently feigned ignorance with the catchphrase, "I see nothing! I hear nothing! I know nothing! '' (or, more commonly as the series went on, "I know nothing, nothing! '').
who said i know nothing on hogan's heroes
Master Sergeant Schultz