Movie Quote/Dr Jekyll and Mr Hyde

J. S. Bach's "Toccata and Fugue in D Minor, BWV 565" play during the opening credits of the 1931 version of Dr. Jekyll and Mr. Hyde. In the opening scene Dr. Jekyll plays it on the organ only to be interrupted by his servant "Poole" who informs him that he is running late to a lecture. (A very quotable lecture at that).

Here is Dr. Jekyll's response to Poole's interruption:

"You know Pool, you're a nuisance. But I don't know what I should do without you. Your sense of duty is as impregnable as Gibraltar, even Bach can't move it."

I love this quote. It says so much with so few words. Not only in the context of the movie itself but it also stands alone.