That script taught me never to write about someone who doesn’t go to the bathroom.

Rod Serling (1924-1975) American screenwriter, playwright, television producer, narrator

Comment to Mark Olshaker
    (Source)

Regarding his script for The Man (1972), from the novel by Irving Wallace, portraying James Earl Jones as the first Black US president. Serling felt the final product came out with Jones too much as a symbol, not a real human being.

In Anne Serling, As I Knew Him: My Dad, Rod Serling (2013).