"There was no battle of egos, just a little discussion about technique. Peter loved to improvise, but Boris did not. Boris pointed out he was a classically trained actor who learned his lines from the script and came prepared to deliver them as written. "It puts me off," he told me of Peter's improvisations."
January 1, 1970
https://en.wikiquote.org/wiki/The_Raven_(1963_film)