One blob of red in the wrong place and the audience isn't looking at the hero, they're looking at a patch of curtain (or something similar) and your whole effect is lost.
“After all manner of professors have done their best for us, the place we are to get knowledge is in books. The true university of these days is a collection of books.”
“I got a mortgage at 17! I didn't even know you could get a mortgage at 17.”